CROSS-REFERENCE

[0001] This application claims the benefit of U.S. Provisional Patent Application No. 63/377,175, filed September 26, 2022, which is incorporated herein by reference in its entirety.

BACKGROUND OF THE INVENTION

[0002] Hypertrophic cardiomyopathy HCM is a chronic, progressive disease of the cardiac sarcomere. The etiology of HCM is multifactorial; a significant portion of affected people have at least one mutation in the genes that encode cardiac sarcomere proteins. Regardless of the cause of HCM, in many cases, excess myosin-actin crossbridge formation in systole and diastole leads to hyperdynamic contraction and impaired relaxation. Over time this excess stress leads to tissue remodeling characterized histologically by myocyte hypertrophy, myofilament disarray, microvascular remodeling, and fibrosis. HCM may be genetic (e.g., heritable) or not genetic. HCM includes a group of highly penetrant, monogenic, autosomal dominant myocardial diseases. Such HCM may be caused by one or more of over 1,000 known point mutations in any one of the proteins contributing to the functional unit of myocardium, the sarcomere. About 1 in 500 individuals in the general population are found to have left ventricular hypertrophy unexplained by other known causes (e.g., hypertension or valvular disease), and many of these can be shown to have HCM, e.g., once other heritable (e.g., lysosomal storage diseases), metabolic, or infiltrative causes have been excluded.

[0003] Medical therapy for HCM is limited and many patients symptoms are empirically managed with beta-blockers, non-dihydropyridine calcium channel blockers, and/or disopyramide. None of these agents carry labeled indications for treating HCM, and essentially no rigorous clinical trial evidence is available to guide their use. In approximately 60% of patients with HCM, the left ventricular outflow tract becomes obstructed, impeding the flow of blood and creating a pressure gradient between the LV cavity and the aorta. For patients with hemodynamically significant outflow tract obstruction (gradient >50 mmHg), surgical myectomy or alcohol septal ablation can be utilized to alleviate the hemodynamic obstruction albeit with significant clinical morbidity and mortality. Provided herein are new therapeutic agents and methods that remedy the long -felt need for improved treatment of HCM and related cardiac disorders. SUMMARY OF THE INVENTION [0004] The disclosure provides compound and salts thereof for use in treating disease. In certain aspects, the disclosure provides a compounds of Formula (I), (II), and (III), pharmaceutical compositions thereof as well as methods of use in the treatment of disease. [0005] Disclosed here is a compound represented by Formula (I): or a salt thereof, wherein: X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (-O-), wherein at least one of X ¹ , X ² , X ³ , or X ⁴ is N; and no more than two of X ¹ , X ² , X ³ , and X ⁴ are N; each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , - S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a ; R ² is selected from: C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , - OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , - S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; R ⁸ is selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , and -CN; each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)R ^10c _, -N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c , - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , - OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and each R ^10a , R ^10b , R ^10c , R ^10d , and R ^10e is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl; wherein if X ³ and X ¹ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , - N(R ¹⁰ ) ₂ , -NO ₂ , and -CN; and wherein if X ⁴ and X ² are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , - N(R ¹⁰ ) ₂ , -NO ₂ , and -CN.The compound or salt of claim 1, wherein X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ) and N. [0006] Disclosed here is a compound represented by Formula (II): or a salt thereof, wherein: n is 0, 1, 2, 3, or 4; each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -C(O)OR ^10a , - OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , - S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a ; R ² is selected from: halogen, -NO ₂ , -CN, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , and -S(O) ₂ R ^10b ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , - S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ ; R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9d ; R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , and -CN; R ⁸ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10f , -SR ^10f , -N(R ^10f ) ₂ , -NO ₂ , and -CN; R ¹¹ is selected from: halogen, -NO ₂ , -CN, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , and -S(O) ₂ R ^10g ; and C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g _, -C(O)OR ^10g , - OC(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -S(O)R ^10g , - S(O) ₂ R ^10g , -NO ₂ , =S, =N(R ^10g ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g ; R ¹² is selected from hydrogen; C _1-6 alkyl optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; and C _3-6 carbocycle and 3- to 10-membered heterocycle each optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; or R ¹² , R ¹¹ , and R ² come together to form a C ₅ -C ₁₀ bridged ring system; each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; each R ^9b’ is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)R ^10c , -N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c , - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , - OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; each R ^9d is independently selected from: halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -C(O)N(R ^10d ) ₂ , - N(R ^10d )C(O)R ^10d , -N(R ^10d )C(O)N(R ^10d ) ₂ , -OC(O)N(R ^10d ) ₂ , - N(R ^10d )C(O)OR ^10d , -C(O)OR ^10d , -OC(O)R ^10d , -S(O)R ^10d , -S(O) ₂ R ^10d , -NO ₂ , =O, =S, =N(R ^10d ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -C(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)R ^10d , - N(R ^10d )C(O)N(R ^10d ) ₂ , -OC(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)OR ^10d , -C(O)OR ^10d , - OC(O)R ^10d , -S(O)R ^10d , -S(O) ₂ R ^10d , -NO ₂ , =O, =S, =N(R ^10d ), and -CN; each R ^9g is independently selected from: halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)R ^10g _, -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g , - N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , - OC(O)R ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), and -CN; each R ^10a , R ^10b , R ^10c , R ^10d , R ^10e , R ^10f , R ^10g , R ^10h is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0007] Disclosed herein is a method of treating a cardiovascular disease or a related condition comprising administering to a subject in need thereof a compound or salt of Formula (III): or a salt thereof, wherein X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (-O-); each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , - S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _{2- 6} alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a ; R ² is selected from: C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , - OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , - S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, any of which is optionally substituted at each occurrence with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; R ⁸ is selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , and -CN; each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)R ^10c _, -N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c , - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , - OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; each R ^10a , R ^10b , R ^10c , R ^10d , R ^10e is independently selected from: hydrogen; and C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. INCORPORATION BY REFERENCE

[0008] All publications, patents, and patent applications mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication, patent, or patent application was specifically and individually indicated to be incorporated by reference.

DETAILED DESCRIPTION OF THE INVENTION

[0009] In certain aspects, the disclosure provides methods for treating a cardiac disease in an individual in need thereof, the method comprising administering a therapeutically effective amount of a compound of Formulas (I), (II), or (III).

[0010] Diseases treated by the methods described herein include, but are not limited to, cardiac diseases. Cardiac diseases treated by the methods described herein include, but are not limited to, heart muscle disease (cardiomyopathy), hypertrophic cardiomyopathy (HCM), abnormal heart rhythms, aorta disease, Marfan syndrome, coronary artery disease, heart attack, heart failure, rhematic heart disease, peripheral vascular disease, stroke, deep vein thrombosis and pulmonary embolism.

[0011] Cardiomyopathy is a heart disease wherein the heart may be abnormally enlarged, thickened, and/or stiffened and may have few or no symptoms early on. As the disease gets worse, symptoms may include, but are not limited to, shortness of breath, feeling tired, irregular heartbeat, fainting, and onset of heart failure. Types of cardiomyopathy include, but are not limited to arrhythmogenic right ventricular dysplasia, dilated cardiomyopathy, hypertrophic cardiomyopathy, restrictive cardiomyopathy, and Takotsubo cardiomyopathy. Hypertrophic cardiomyopathy (HCM) may be genetic (e.g., heritable) or not genetic. HCM may be obstructive or nonobstructive. Genetic hypertrophic cardiomyopathy (HCM) comprises a group of highly penetrant, monogenic, autosomal dominant myocardial diseases. HCM may be caused by one or more of over 1,000 known point mutations in any one of the proteins contributing to the functional unit of myocardium, the sarcomere.

[0012] In approximately two-thirds of HCM subjects, the path followed by blood exiting the heart, known as the left ventricular outflow tract (LVOT), becomes obstructed by the enlarged and diseased muscle, restricting the flow of blood from the heart to the rest of the body (obstructive HCM). In other subjects, the thickened heart muscle does not block the LVOT, and their disease is driven by diastolic impairment due to the enlarged and stiffened heart muscle (non-obstructive HCM). In either obstructive or non-obstructive HCM subjects, exertion can result in fatigue or shortness of breath, interfering with a subject’s ability to participate in activities of daily living. HCM has also been associated with increased risks of atrial fibrillation, stroke, heart failure and sudden cardiac death. [0013] Currently available therapies for HCM are variably effective in alleviating symptoms but typically show decreased efficacy with increasing disease duration. Patients are thus empirically managed with beta-blockers, non-dihydropyridine calcium channel blockers, and/or disopyramide. In approximately 60% of patients with HCM, the left ventricular outflow tract becomes obstructed, impeding the flow of blood and creating a pressure gradient between the LV cavity and the aorta. For patients with hemodynamically significant outflow tract obstruction (gradient >50 mmHg), surgical myectomy or alcohol septal ablation can be utilized to alleviate the hemodynamic obstruction albeit with significant clinical morbidity and mortality. Provided are new therapeutic agents and methods that remedy the long-felt need for improved treatment of HCM and related cardiac disorders. [0014] The compounds of the invention or their pharmaceutically acceptable salts can alter the natural history of HCM and other diseases rather than merely palliating symptoms. The mechanisms conferring clinical benefit to HCM patients can extend to patients with other forms of heart disease sharing similar pathophysiology, with or without demonstrable genetic influence. For example, an effective treatment for HCM, by improving ventricular relaxation during diastole, can also be effective in a broader population characterized by diastolic dysfunction. The compounds of the invention or their pharmaceutically acceptable salts can specifically target the root causes of the conditions or act upon other downstream pathways. Accordingly, the compounds of the invention or their pharmaceutically acceptable salts can also confer benefit to patients suffering from diastolic heart failure with preserved ejection fraction, ischemic heart disease, angina pectoris, or restrictive cardiomyopathy. Compounds of the invention or their pharmaceutically acceptable salts can also promote salutary ventricular remodeling of left ventricular hypertrophy due to volume or pressure overload; e.g., chronic mitral regurgitation, chronic aortic stenosis, or chronic systemic hypertension; in conjunction with therapies aimed at correcting or alleviating the primary cause of volume or pressure overload (valve repair/replacement, effective antihypertensive therapy). By reducing left ventricular filling pressures, the compounds could reduce the risk of pulmonary edema and respiratory failure. Reducing or eliminating functional mitral regurgitation and/or lowering left atrial pressures may reduce the risk of paroxysmal or permanent atrial fibrillation, and with it reduce the attendant risk of arterial thromboembolic complications including but not limited to cerebral arterial embolic stroke. Reducing or eliminating either dynamic and/or static left ventricular outflow obstruction may reduce the likelihood of requiring septal reduction therapy, either surgical or percutaneous, with their attendant risks of short- and long-term complications. The compounds or their pharmaceutically acceptable salts may reduce the severity of the chronic ischemic state associated with HCM and may thereby reduce the risk of Sudden Cardiac Death (SCD) or its equivalent in patients with implantable cardioverter-defibrillators (frequent and/or repeated ICD discharges) and/or the need for potentially toxic antiarrhythmic medications. The compounds or their pharmaceutically acceptable salts could be valuable in reducing or eliminating the need for concomitant medications with their attendant potential toxicities, drug- drug interactions, and/or side effects. The compounds or their pharmaceutically acceptable salts may reduce interstitial myocardial fibrosis and/or slow the progression, arrest, or reverse left ventricular hypertrophy. Definitions [0015] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as is commonly understood by one of skill in the art to which this invention belongs. [0016] As used in the specification and claims, the singular form “a”, “an” and “the” includes plural references unless the context clearly dictates otherwise. [0017] The term “C _x-y ” or “C _x -C _y ” (e.g., when used in conjunction with a chemical moiety, such as alkyl, alkenyl, or alkynyl) is meant to include groups that comprise a number of carbon atoms greater than or equal to x carbon atoms and less than or equal to y carbon atoms in the chemical moiety, subject to the following. The term “C _x-y ” or “C _x -C _y ” is not meant to limit the number of carbon atoms which may be attached to the chemical moiety when the chemical moiety is substituted with a second chemical moiety. For example, the term “C _1-6 alkyl” or “C ₁ to C ₆ alkyl” refers to saturated, substituted or unsubstituted, hydrocarbon groups, including straight- chain alkyl groups (e.g., linear alkyl groups) and branched alkyl groups that contain 1, 2, 3, 4, 5, or 6 carbon atoms, plus however many carbon atoms may be present in any substituents of the C _1-6 alkyl. For example, if a C _1-6 alkyl is optionally substituted with a second chemical moiety comprising two carbon atoms, then it will be understood that the C _1-6 alkyl can include between 1 and 8 carbon atoms. [0018] The terms “C _x-y alkenyl” and “C _x-y alkynyl” refer to substituted or unsubstituted unsaturated aliphatic groups analogous in length and possible substitution to the alkyls described above, but that contain at least one double or triple bond, respectively. [0019] "Amino" refers to the -NH ₂ moiety. [0020] "Cyano" refers to the -CN moiety. [0021] "Nitro" refers to the -NO ₂ moiety. [0022] "Oxa" refers to the -O- moiety. [0023] "Oxo" refers to the =O moiety. [0024] "Thioxo" refers to the =S moiety. [0025] "Imino" refers to the =N-H moiety. [0026] "Oximo" refers to the =N-OH moiety. [0027] "Hydrazino" refers to the =N-NH ₂ moiety. [0028] "Alkyl" refers to a straight (e.g., linear) or branched hydrocarbon moiety consisting solely of carbon and hydrogen atoms, fully saturated. In certain embodiments, “alkyl” comprises one to fifteen carbon atoms (e.g., C ₁ -C ₁₅ alkyl). In certain embodiments, an alkyl comprises one to thirteen carbon atoms (e.g., C ₁ -C ₁₃ alkyl). In certain embodiments, an alkyl comprises one to eight carbon atoms (e.g., C ₁ -C ₈ alkyl). In certain embodiments, an alkyl comprises one to six carbon atoms (e.g., C ₁ -C ₆ alkyl). In other embodiments, an alkyl comprises one to five carbon atoms (e.g., C ₁ -C ₅ alkyl). In other embodiments, an alkyl comprises one to four carbon atoms (e.g., C ₁ -C ₄ alkyl). In other embodiments, an alkyl comprises one to three carbon atoms (e.g., C ₁ - C ₃ alkyl). In other embodiments, an alkyl comprises one to two carbon atoms (e.g., C ₁ -C ₂ alkyl). In other embodiments, an alkyl comprises one carbon atom (e.g., C ₁ alkyl, e.g., methyl). In other embodiments, an alkyl comprises five to fifteen carbon atoms (e.g., C ₅ -C ₁₅ alkyl). In other embodiments, an alkyl comprises five to eight carbon atoms (e.g., C ₅ -C ₈ alkyl). In other embodiments, an alkyl comprises two to five carbon atoms (e.g., C ₂ -C ₅ alkyl). In other embodiments, an alkyl comprises three to five carbon atoms (e.g., C ₃ -C ₅ alkyl). In other embodiments, the alkyl group is selected from methyl, ethyl, 1-propyl (n-propyl), 1-methylethyl (2-propyl, iso-propyl), 1-butyl (n-butyl), 1-methylpropyl (sec-butyl), 2-methylpropyl (iso-butyl), 1,1-dimethylethyl (tert-butyl), and 1-pentyl (n-pentyl). The alkyl is attached to the rest of the molecule by a single bond. [0029] “Aminoalkyl” refers to a moiety boded through a nitrogen atom of the form –N(H)(alkyl) or N(alkyl)(alkyl), wherein when the moiety is N(alkyl)(alkyl), the two alkyl groups bonded to nitrogen can be the same alkyl groups or different alkyl groups. [0030] "Alkoxy" refers to a moiety bonded through an oxygen atom of the formula –O-alkyl, where alkyl is an alkyl chain as defined above. [0031] "Alkenyl" refers to a straight (e.g., linear) or branched hydrocarbon moiety consisting solely of carbon and hydrogen atoms, the moiety comprising at least one carbon-carbon double bond. In certain embodiments, an alkenyl comprises two to twelve carbon atoms. In certain embodiments, an alkenyl comprises two to eight carbon atoms. In other embodiments, an alkenyl comprises two to four carbon atoms. The alkenyl is attached to the rest of the molecule by a single bond, for example, ethenyl (i.e., vinyl), prop-1-enyl (i.e., allyl), but-1-enyl, pent-1-enyl, penta-1,4-dienyl, and the like. [0032] "Alkynyl" refers to a straight (e.g., linear) or branched hydrocarbon moiety consisting solely of carbon and hydrogen atoms, the moiety comprising at least one carbon-carbon triple bond. In some embodiments, an alkynyl comprises from two to twelve carbon atoms. In some embodiments, an alkynyl optionally further comprises at least one carbon-carbon double bond. In certain embodiments, an alkynyl comprises two to eight carbon atoms. In other embodiments, an alkynyl comprises two to six carbon atoms. In other embodiments, an alkynyl comprises two to four carbon atoms. The alkynyl is attached to the rest of the molecule by a single bond, for example, ethynyl, propynyl, butynyl, pentynyl, hexynyl, and the like. [0033] "Alkylene" or "alkylene chain" refers to a linear (e.g., straight), or branched, divalent, hydrocarbon moiety. An “alkylene” or “alkylene chain” can link a portion of the molecule to a second moiety. An “alkylene” or “alkylene chain” consists solely of carbon and hydrogen atoms (substitution of an alkylene with one or more substituents comprising atoms other than hydrogen, such as N, O, and S, may be specified). An “alkylene” or “alkylene chain” can contain no unsaturation (notwithstanding the points of attachment of an alkylene to the rest of the molecule). In certain embodiments, the “alkylene” or “alkylene chain” and comprises one to twelve carbon atoms, for example, methylene, ethylene, propylene, n-butylene, and the like. The alkylene chain can be attached to the portion of the molecule through a single bond and to the second moiety through a single bond. The points of attachment of an alkylene chain to the rest of the molecule and to the second moiety can be through one carbon atom in the alkylene chain or can be through any two carbon atoms within the alkylene. In certain embodiments, an alkylene comprises one to eight carbon atoms (e.g., C ₁ -C ₈ alkylene). In other embodiments, an alkylene comprises one to five carbon atoms (e.g., C ₁ -C ₅ alkylene). In other embodiments, an alkylene comprises one to four carbon atoms (e.g., C ₁ -C ₄ alkylene). In other embodiments, an alkylene comprises one to three carbon atoms (e.g., C ₁ -C ₃ alkylene). In other embodiments, an alkylene comprises one to two carbon atoms (e.g., C ₁ -C ₂ alkylene). In other embodiments, an alkylene comprises one carbon atom (e.g., C ₁ alkylene). In other embodiments, an alkylene comprises five to eight carbon atoms (e.g., C ₅ -C ₈ alkylene). In other embodiments, an alkylene comprises two to five carbon atoms (e.g., C ₂ -C ₅ alkylene). In other embodiments, an alkylene comprises three to five carbon atoms (e.g., C ₃ -C ₅ alkylene). [0034] "Alkenylene" or "alkenylene chain" refers to a linear (e.g., straight), or branched, divalent, hydrocarbon moiety. An "alkenylene" or "alkenylene chain" can link a portion of the molecule to a second moiety. An "alkenylene" or "alkenylene chain" consists solely of carbon and hydrogen atoms (substitution of an alkenylene with one or more substituents comprising atoms other than hydrogen, such as N, O, and S, may be specified). An "alkenylene" or "alkenylene chain" comprises at least one carbon-carbon double bond. In certain embodiments, an "alkenylene" or "alkenylene chain" comprises from two to twelve carbon atoms. The alkenylene chain can be attached to the portion of the molecule through a single bond and to the second moiety through a single bond. The points of attachment of an alkenylene chain to the rest of the molecule and to the second moiety can be through one carbon in the alkenylene chain or through any two carbons within the alkenylene chain. In certain embodiments, an alkenylene comprises two to eight carbon atoms (e.g., C ₂ -C ₈ alkenylene). In other embodiments, an alkenylene comprises two to five carbon atoms (e.g., C ₂ -C ₅ alkenylene). In other embodiments, an alkenylene comprises two to four carbon atoms (e.g., C ₂ -C ₄ alkenylene). In other embodiments, an alkenylene comprises two to three carbon atoms (e.g., C ₂ -C ₃ alkenylene). In other embodiments, an alkenylene comprises five to eight carbon atoms (e.g., C ₅ -C ₈ alkenylene). In other embodiments, an alkenylene comprises two to five carbon atoms (e.g., C ₂ -C ₅ alkenylene). In other embodiments, an alkenylene comprises three to five carbon atoms (e.g., C ₃ -C ₅ alkenylene). [0035] "Alkynylene" or "alkynylene chain" refers to a linear (e.g., straight), or branched, divalent, hydrocarbon moiety. An “alkynylene" or "alkynylene chain" can link a portion of the molecule to a second moiety. An “alkynylene" or "alkynylene chain" consists solely of carbon and hydrogen (substitution of an alkynylene with one or more substituents comprising atoms other than hydrogen, such as N, O, and S, may be specified). An “alkynylene" or "alkynylene chain" comprises at least one carbon-carbon triple bond. In certain embodiments, an “alkynylene" or "alkynylene chain" comprises from two to twelve carbon atoms. An alkynylene chain can be attached to the portion of the molecule through a single bond and to the second moiety through a single bond. The points of attachment of an alkynylene chain to the rest of the molecule and to the second moiety can be through one carbon in the alkynylene chain or through any two carbons within the alkynylene chain. In certain embodiments, an alkynylene comprises two to eight carbon atoms (e.g., C ₂ -C ₈ alkynylene). In other embodiments, an alkynylene comprises two to five carbon atoms (e.g., C ₂ -C ₅ alkynylene). In other embodiments, an alkynylene comprises two to four carbon atoms (e.g., C ₂ -C ₄ alkynylene). In other embodiments, an alkynylene comprises two to three carbon atoms (e.g., C ₂ -C ₃ alkynylene). In other embodiments, an alkynylene comprises two carbon atom (e.g., C ₂ alkylene). In other embodiments, an alkynylene comprises five to eight carbon atoms (e.g., C ₅ -C ₈ alkynylene). In other embodiments, an alkynylene comprises three to five carbon atoms (e.g., C ₃ -C ₅ alkynylene). [0036] The term “carbocycle” as used herein refers to a saturated or unsaturated (e.g., aromatic or nonaromatic unsaturated) ring or ring system in which each atom of the ring is carbon. For example, the term “carbocycle” includes 3- to 12-membered monocyclic rings (e.g., 3- to 10- membered monocyclic rings) and 4- to 20-membered polycyclic ring systems (e.g., 5- to 15- membered spiro polycyclic ring systems, 5- to 15-membered bridged polycyclic ring systems, or 4- to 15-membered fused polycyclic ring systems). For example, carbocycle includes 4- to 15- membered bicyclic rings (e.g., 5- to 15-membered spiro bicycles, 5- to 15-membered bridged bicyclic ring systems, or 4- to 15-membered fused bicyclic ring systems). For example, carbocycle includes tricyclic ring systems, which may be bridged, fused, spiro, or a combination thereof. For example, carbocycle includes tetracyclic ring systems, which may be bridged, fused, spiro, or a combination thereof. For example, carbocycle includes ring systems that are both fused and bridged; ring systems that are both fused and spiro; ring systems that are both bridged and spiro; and ring systems that are both fused and bridged and are also spiro. Each ring of a polycyclic carbocycle may be selected from saturated and unsaturated (e.g., aromatic or nonaromatic unsaturated) rings. In an exemplary embodiment, an aromatic ring (e.g., phenyl) of a polycyclic carbocycle may be fused to a saturated or unsaturated ring (e.g., cyclohexane, cyclopentane, cyclohexene, or phenyl). A polycyclic carbocycle includes any combination of saturated and unsaturated (e.g., aromatic or nonaromatic unsaturated) rings, as valence permits. For example, polycyclic carbocycles can be spiro bicyclic rings, such as spiropentane. For example, a polycyclic carbocycle includes any combination of ring sizes such as 2-2 spiro ring systems (e.g., spiro[2.2]pentane), 3-3 spiro ring systems, 4-4 spiro ring systems, 4-5 fused ring systems (e.g., bicyclo[4.5.0] fused ring systems), 5-5 fused ring systems, 5-6 fused ring systems, 6-6 fused ring systems (e.g., naphthalene), 5-7 fused ring systems, 6-7 fused ring systems, 5-8 fused ring systems, and 6-8 fused ring systems. Exemplary carbocycles include cyclopentyl, cyclohexyl, cyclohexenyl, adamantyl, phenyl, indanyl, naphthyl, trans-bicyclo[4.4.0]decane, cis- bicylo[4.4.0]decane, spiro[3.4]octane, fluoranthene, and bicyclo[1.1.1]pentanyl. [0037] The term “aryl” refers to an aromatic monocyclic or aromatic polycyclic hydrocarbon ring system comprising at least one cyclic, delocalized (4n+2) π-electronic system, wherein n is an integer greater than or equal to 0, in accordance with Hückel theory. In some embodiments, the aromatic monocyclic or aromatic polycyclic hydrocarbon ring system comprises only hydrogen atoms and carbon atoms. In some embodiments, the aromatic monocyclic or polycyclic system contains from three to twenty carbon atoms. In some embodiments, at least one of the rings in the polycyclic aromatic ring system is aromatic. In some embodiments, the aromatic monocyclic or aromatic polycyclic hydrocarbon ring system comprises a cyclic, delocalized (4n+2) π-electronic system in accordance with Hückel theory. In some embodiments, the ring system from which aryl groups are derived include, but are not limited to, groups such as benzene, fluorene, indane, indene, anthracene, tetralin, and naphthalene. In some embodiments, the aryl substituent is not charged (e.g., neutral). In some embodiments, the aryl substituent bears no net charge. In some embodiments, the aryl substituent bears no net charge and is not zwitterionic. In some embodiments, none of the carbon atoms of the aryl substituent are charged. In some embodiments, none of the carbon atoms of the aryl substituent are charged. Alternatively, in some embodiments, the aryl substituent is positively or negatively charged or zwitterionic. [0038] The term "cycloalkyl" refers to a saturated ring in which each atom of the ring is carbon. Cycloalkyl may include monocyclic and polycyclic rings such as 3- to 10-membered monocyclic rings, 5- to 12-membered bicyclic rings, 5- to 12-membered spiro bicycles, and 5- to 12- membered bridged rings. In certain embodiments, a cycloalkyl comprises three to ten carbon atoms. In other embodiments, a cycloalkyl comprises three to seven carbon atoms. In other embodiments, a cycloalkyl comprises five to seven carbon atoms. The cycloalkyl may be attached to the rest of the molecule by a single bond. Examples of monocyclic cycloalkyls include, e.g., cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cyclooctyl. Examples of polycyclic cycloalkyls include, but are not limited to, adamantyl, spiropentane, norbornyl (i.e., bicyclo[2.2.1]heptanyl), decalinyl, 7,7 dimethyl bicyclo[2.2.1]heptanyl, bicyclo[1.1.1]pentanyl, spiropentane, and the like. [0039] The term "cycloalkenyl" refers to a saturated ring in which each atom of the ring is carbon, and there is at least one double bond between two ring carbons. Cycloalkenyl may include monocyclic and polycyclic rings, such as 3- to 10-membered monocyclic rings and 4- to 12-membered bicyclic rings (e.g., 5- to 12-membered bridged bicyclic rings, fused 4- to 12- membered bicyclic rings, and spiro 5- to 12-membered bicyclic rings). In other embodiments, a cycloalkenyl comprises five to seven carbon atoms. The cycloalkenyl may be attached to the rest of the molecule by a single bond. Examples of monocyclic cycloalkenyls include, e.g., cyclopentenyl, cyclohexenyl, cycloheptenyl, and cyclooctenyl. [0040] The term “halo” or, alternatively, “halogen” or “halide,” means fluoro, chloro, bromo or iodo. In some embodiments, halo is fluoro, chloro, or bromo. In some embodiments, halo is fluoro or chloro. [0041] The term “haloalkyl” refers to an alkyl, as defined above, that is substituted by one or more halogens, for example, trifluoromethyl, dichloromethyl, bromomethyl, 2,2,2-trifluoroethyl, 1-chloromethyl-2-fluoroethyl, and the like. In some embodiments, the alkyl part of the haloalkyl is optionally further substituted as described herein. [0042] The term “heterocycle” as used herein refers to a saturated or unsaturated (e.g., aromatic or nonaromatic unsaturated) ring or ring system in which one or more heteroatom(s) is(are) member(s) of the ring or ring system. Exemplary heteroatoms include N, O, Si, P, B, and S atoms. For example, heterocycles include 3- to 12-membered monocyclic rings (e.g., 3- to 10- membered monocyclic rings) and 4- to 20-membered polycyclic ring systems (e.g., 4- to 15- membered fused poly ring systems, 5- to 15-membered spiro polycyclic ring systems, and 5- to 15-membered bridged polycyclic ring systems). For example, heterocycles include 4- to 20- membered bicyclic ring systems (e.g., 4- to 15-membered fused bicyclic ring systems, 5- to 15- membered spiro bicyclic ring systems, and 5- to 15-membered bridged bicyclic ring systems). For example, heterocycle includes tricyclic ring systems, which may be bridged, fused, spiro, or a combination thereof. For example, heterocycle includes tetracyclic ring systems, which may be bridged, fused, spiro, or a combination thereof. For example, heterocycle includes ring systems that are both fused and bridged; ring systems that are both fused and spiro; ring systems that are both bridged and spiro; and ring systems that are both fused and bridged and are also spiro. Each ring of a polycyclic heterocycle may be selected from saturated and unsaturated (e.g., aromatic or nonaromatic unsaturated) rings. A polycyclic heterocycle includes any combination of saturated, and unsaturated (e.g., aromatic or nonaromatic unsaturated) rings, as valence permits. In an exemplary embodiment, an aromatic ring, e.g., pyridyl or phenyl, may be fused to a saturated or unsaturated ring, e.g., cyclohexane, cyclopentane, morpholine, piperidine or cyclohexene, in a heterocycle, as long as at least one atom in the resulting fused ring system is a heteroatom. A polycyclic heterocycle includes any combination of ring sizes such as 3-3 spiro, 4-5 fused ring systems, 5-5 fused ring systems, 5-6 fused ring systems, 6-6 fused ring systems, 5- 7 fused ring systems, 6-7 fused ring systems, 5-8 fused ring systems, and 6-8 fused ring systems. A bicyclic heterocycle further includes spiro bicyclic rings, e.g., 5 to 12-membered spiro bicycles, such as 2-oxa-6-azaspiro[3.3]heptane. In some embodiments, a heterocycle comprises multiple heteroatoms. In some embodiments, a heterocycle comprises an atom selected from nitrogen, oxygen, and sulfur. In some embodiments, a heterocycle comprises multiple atoms selected from nitrogen, oxygen, and sulfur. Nonlimiting examples of heterocycles include pyridine, pyrrole, indole, carbazole, piperidine, oxazole, morpholine, thiophene, benzothiophene, furan, tetrahydrofuran, and pyran. Nonlimiting examples of heterocycles include azepinyl, acridinyl, benzimidazolyl, benzindolyl, 1,3-benzodioxolyl, benzofuranyl, benzoxazolyl, benzo[d]thiazolyl, benzothiadiazolyl, benzo[b][1,4]dioxepinyl, benzo[b][1,4]oxazinyl, 1,4-benzodioxanyl, benzonaphthofuranyl, benzoxazolyl, benzodioxolyl, benzodioxinyl, benzopyranyl, benzopyranonyl, benzofuranyl, benzofuranonyl, benzothienyl (benzothiophenyl), benzothieno[3,2-d]pyrimidinyl, benzotri azolyl, benzo[4,6]imidazo[l,2-a]pyridinyl, carbazolyl, cinnolinyl, cyclopenta[d]pyrimidinyl, 6,7-dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidinyl,

5.6-dihydrobenzo[h]quinazolinyl, 5,6-dihydrobenzo[h]cinnolinyl, 6,7-dihydro-5H- benzo[6,7]cyclohepta[l,2-c]pyridazinyl, dibenzofuranyl, dibenzothiophenyl, furanyl, furanonyl, furo[3,2-c]pyridinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyrimidinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyridazinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyridinyl, isothiazolyl, imidazolyl, indazolyl, indolyl, indazolyl, isoindolyl, indolinyl, isoindolinyl, isoquinolyl, indolizinyl, isoxazolyl, 5,8-methano-5,6,7,8-tetrahydroquinazolinyl, naphthyridinyl,

1.6-naphthyri dinonyl, oxadiazolyl, 2-oxoazepinyl, oxazolyl, oxiranyl, 5,6,6a,7,8,9,10,10a-octahydrobenzo[h]quinazolinyl, 1 -phenyl- 1H-pyrrolyl, phenazinyl, phenothiazinyl, phenoxazinyl, phthalazinyl, pteridinyl, purinyl, pyrrolyl, pyrazolyl, pyrazolo[3,4-d]pyrimidinyl, pyridinyl, pyrido[3,2-d]pyrimidinyl, pyrido[3,4-d]pyrimidinyl, pyrazinyl, pyrimidinyl, pyridazinyl, pyrrolyl, quinazolinyl, quinoxalinyl, quinolinyl, isoquinolinyl, tetrahydroquinolinyl, 5,6,7,8-tetrahydroquinazolinyl,

5.6.7.8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidinyl,

6.7.8.9-tetrahydro-5H-cyclohepta[4,5]thieno[2,3-d]pyrimid inyl, 5,6,7,8-tetrahydropyrido[4,5-c]pyridazinyl, thiazolyl, thiadiazolyl, triazolyl, tetrazolyl, triazinyl, thieno[2,3-d]pyrimidinyl, thieno[3,2-d]pyrimidinyl, thieno[2,3-c]pyridinyl, and thiophenyl (i.e. thienyl). In some embodiments, the heterocycle is attached to the molecule by a carbon atom. In some embodiments, the heterocycle is attached to the molecule by a nitrogen atom. In some embodiments, the heterocycle comprises a moiety selected from a heteroaryl, a heterocycloalkyl, and a heterocycloalkenyl. In some embodiments, the heterocycle is a heteroaryl. In some embodiments, the heterocycle is a heterocycloalkyl. In some embodiments, the heterocycle is a heterocycloalkenyl.

[0043] In some embodiments, a heterocycle comprises an atom selected from nitrogen and oxygen. In some embodiments, a heterocycle comprises an atom selected from nitrogen and sulfur. In some embodiments, a heterocycle comprises an atom selected from oxygen and sulfur. In some embodiments, a heterocycle comprises an atom selected from nitrogen. In some embodiments, a heterocycle comprises an atom selected from oxygen. In some embodiments, a heterocycle comprises an atom selected from sulfur.

[0044] In some embodiments, the heterocycle comprises 1 to 8 heteroatoms. In some embodiments, the heterocycle comprises 1 to 5 heteroatoms. In some embodiments, the heterocycle comprises 1 to 3 heteroatoms. In some embodiments, the heterocycle comprises 1 to 2 heteroatoms. In some embodiments, the heterocycle is monosubstituted, disubstituted, trisubstituted, tetrasubstituted, or pentasubstituted. [0045] In the molecule (e.g., in a heterocycle), one or more nitrogen atoms, if present, can be optionally quaternized. In some embodiments, the heterocycle substituent is positively charged. In some embodiments, the heterocycle substituent is negatively charged. In some embodiments, the heterocycle substituent is neutral. In some embodiments, the heterocycle substituent is zwitterionic. Alternatively, or in addition, in some embodiments, the heterocycle substituent is not charged. In some embodiments, the heterocycle substituent bears no charges. In some embodiments, the heterocycle substituent bears no net charge. In some embodiments, no atoms within the heterocycle substituent bear any net charge. In some embodiments, the heterocycle substituent bears no net charge and is not zwitterionic. [0046] The term “heteroaryl” refers to a moiety derived from an aromatic monocyclic or aromatic polycyclic ring system, in which one or more heteroatom(s) is(are) member(s) of the ring system, and the ring system comprises at least one cyclic, delocalized (4n+2) π-electronic system, wherein n is an integer greater than or equal to 0, in accordance with Hückel theory. Exemplary heteroatoms include N, O, Si, P, B, and S atoms. In some embodiments, a heteroaryl includes one or more heteroatoms selected from nitrogen, oxygen, and sulfur. In some embodiments, a heteroaryl includes multiple heteroatoms selected from nitrogen, oxygen, and sulfur. In certain embodiments, “heteroaryl” includes rings and ring systems comprising 3 to 20 atoms. In some embodiments, “heteroaryl” includes rings and ring systems that comprise two to seventeen carbon atoms and from one to six heteroatoms selected from nitrogen, oxygen and sulfur. As used herein, the heteroaryl moiety is a monocyclic or polycyclic (e.g., bicyclic, tricyclic or tetracyclic) ring system, wherein at least one of the rings in the ring system is aromatic, i.e., it contains a cyclic, delocalized (4n+2) π-electron system in accordance with the Hückel theory. Heteroaryl includes fused, bridged, and spiro ring systems. The heteroatom(s) in the heteroaryl moiety is(are) optionally oxidized. One or more nitrogen atoms, if present, are optionally quaternized. The heteroaryl is attached to the rest of the molecule through any atom of the ring(s). Examples of heteroaryls include, but are not limited to, azepinyl, acridinyl, benzimidazolyl, benzindolyl, 1,3-benzodioxolyl, benzofuranyl, benzoxazolyl, benzo[d]thiazolyl, benzothiadiazolyl, benzo[b][1,4]dioxepinyl, benzo[b][1,4]oxazinyl, 1,4-benzodioxanyl, benzonaphthofuranyl, benzoxazolyl, benzodioxolyl, benzodioxinyl, benzopyranyl, benzopyranonyl, benzofuranyl, benzofuranonyl, benzothienyl (benzothiophenyl), benzothieno[3,2-d]pyrimidinyl, benzotriazolyl, benzo[4,6]imidazo[1,2-a]pyridinyl, carbazolyl, cinnolinyl, cyclopenta[d]pyrimidinyl, 6,7-dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidinyl, 5,6-dihydrobenzo[h]quinazolinyl, 5,6-dihydrobenzo[h]cinnolinyl, 6,7-dihydro-5H- benzo[6,7]cyclohepta[1,2-c]pyridazinyl, dibenzofuranyl, dibenzothiophenyl, furanyl, furanonyl, furo[3,2-c]pyridinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyrimidinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyridazinyl, 5,6,7,8,9,10-hexahydrocycloocta[d]pyridinyl, isothiazolyl, imidazolyl, indazolyl, indolyl, indazolyl, isoindolyl, indolinyl, isoindolinyl, isoquinolyl, indolizinyl, isoxazolyl, 5,8-methano-5,6,7,8-tetrahydroquinazolinyl, naphthyridinyl, 1,6-naphthyridinonyl, oxadiazolyl, 2-oxoazepinyl, oxazolyl, oxiranyl, 5,6,6a,7,8,9,10,10a-octahydrobenzo[h]quinazolinyl, 1-phenyl-1H-pyrrolyl, phenazinyl, phenothiazinyl, phenoxazinyl, phthalazinyl, pteridinyl, purinyl, pyrrolyl, pyrazolyl, pyrazolo[3,4-d]pyrimidinyl, pyridinyl, pyrido[3,2-d]pyrimidinyl, pyrido[3,4-d]pyrimidinyl, pyrazinyl, pyrimidinyl, pyridazinyl, pyrrolyl, quinazolinyl, quinoxalinyl, quinolinyl, isoquinolinyl, tetrahydroquinolinyl, 5,6,7,8-tetrahydroquinazolinyl, 5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidinyl, 6,7,8,9-tetrahydro-5H-cyclohepta[4,5]thieno[2,3-d]pyrimidiny l, 5,6,7,8-tetrahydropyrido[4,5-c]pyridazinyl, thiazolyl, thiadiazolyl, triazolyl, tetrazolyl, triazinyl, thieno[2,3-d]pyrimidinyl, thieno[3,2-d]pyrimidinyl, thieno[2,3-c]pyridinyl, and thiophenyl (i.e. thienyl). In some embodiments, the heteroaryl substituent is positively or negatively charged. In some embodiments, the heteroaryl substituent is neutral. In some embodiments, the heteroaryl substituent is zwitterionic; alternatively, or in addition, in some embodiments, the heteroaryl substituent is not charged. In some embodiments, the heteroaryl substituent bears no charges. In some embodiments, the heteroaryl substituent bears no net charge. In some embodiments, the heteroaryl substituent bears no net charge and is not zwitterionic. [0047] The term “heterocycle” comprises “heteroaryls” and “heterocycloalkyls.” The term “carbocycle” comprises “aryls” and “cycloalkyls.” [0048] The term “heterocycloalkyl” refers to a saturated ring with carbon atoms and at least one heteroatom. Exemplary heteroatoms include N, O, Si, P, B, and S atoms. Heterocycloalkyl may include monocyclic and polycyclic rings such as 3- to 10-membered monocyclic rings, 6- to 12- membered bicyclic rings, 5- to 12-membered spiro bicycles, or 5- to 12-membered bridged rings. The heteroatoms in the heterocycloalkyl radical are optionally oxidized. One or more nitrogen atoms, if present, are optionally quaternized. The heterocycloalkyl is attached to the rest of the molecule through any atom of the heterocycloalkyl, valence permitting, such as any carbon or nitrogen atoms of the heterocycloalkyl. Examples of heterocycloalkyl radicals include, but are not limited to, dioxolanyl, thienyl[1,3]dithianyl, decahydroisoquinolyl, imidazolinyl, imidazolidinyl, isothiazolidinyl, isoxazolidinyl, morpholinyl, octahydroindolyl, octahydroisoindolyl, 2-oxopiperazinyl, 2-oxopiperidinyl, 2-oxopyrrolidinyl, oxazolidinyl, piperidinyl, piperazinyl, 4-piperidonyl, pyrrolidinyl, pyrazolidinyl, quinuclidinyl, thiazolidinyl, tetrahydrofuryl, trithianyl, tetrahydropyranyl, thiomorpholinyl, thiamorpholinyl, 1-oxo-thiomorpholinyl, 2-oxa-6-azaspiro[3.3]heptane, and 1,1-dioxo-thiomorpholinyl. In some embodiments, a heterocycloalkyl comprises one heteroatom. In some embodiments, a heterocycloalkyl comprises one heteroatom selected from N, O, and S. In some embodiments, a heterocycloalkyl comprises multiple heteroatoms. In some embodiments, a heterocycloalkyl comprises multiple heteroatoms selected from N, O, and S. [0049] The term "heterocycloalkenyl" refers to an unsaturated ring with carbon atoms and at least one heteroatom and there is at least one double bond between two ring carbons. Heterocycloalkenyl does not include heteroaryl rings. Exemplary heteroatoms include N, O, Si, P, B, and S atoms. Heterocycloalkenyl may include monocyclic and polycyclic rings such as 3- to 10-membered monocyclic rings, 6- to 12-membered bicyclic rings, and 5- to 12-membered bridged rings. In other embodiments, a heterocycloalkenyl comprises five to seven ring atoms. The heterocycloalkenyl may be attached to the rest of the molecule by a single bond. Examples of monocyclic cycloalkenyls include, e.g., pyrroline (dihydropyrrole), pyrazoline (dihydropyrazole), imidazoline (dihydroimidazole), triazoline (dihydrotriazole), dihydrofuran, dihydrothiophene, oxazoline (dihydrooxazole), isoxazoline (dihydroisoxazole), thiazoline (dihydrothiazole), isothiazoline (dihydroisothiazole), oxadiazoline (dihydrooxadiazole), thiadiazoline (dihydrothiadiazole), dihydropyridine, tetrahydropyridine, dihydropyridazine, tetrahydropyridazine, dihydropyrimidine, tetrahydropyrimidine, dihydropyrazine, tetrahydropyrazine, pyran, dihydropyran, thiopyran, dihydrothiopyran, dioxine, dihydrodioxine, oxazine, dihydrooxazine, thiazine, and dihydrothiazine. [0050] The term “substituted” refers to moieties having substituents replacing a hydrogen on one or more carbons or substitutable heteroatoms, e.g., an NH or NH ₂ of a compound. It will be understood that “substitution” or “substituted with” includes the implicit proviso that such substitution is in accordance with permitted valence of the substituted atom and the substituent and further includes the proviso that the substitution results in a stable compound, e.g., a compound which does not rapidly undergo rearrangement, cyclization, elimination, etc. In certain embodiments, substituted refers to moieties having substituents replacing two hydrogen atoms on the same carbon atom, such as substituting the two hydrogen atoms on a single carbon with an oxo, imino, oxime, hydrazone, or thioxo group. As used herein, the term “substituted” is contemplated to include all permissible substituents of organic compounds. In a broad aspect, the permissible substituents include acyclic and cyclic, branched and unbranched, carbocyclic and heterocyclic, aromatic and non-aromatic substituents of organic compounds. The permissible substituents can be one or more and the same or different for appropriate organic compounds. [0051] In some embodiments, substituents may include any substituents described herein, for example: halogen, hydroxy, oxo (=O), thioxo (=S), cyano (-CN), nitro (-NO ₂ ), imino (=N-H), oximo (=N-OH), hydrazino (=N-NH ₂ ), -R ^b -OR ^a , -R ^b -OC(O)-R ^a , -R ^b -OC(O)-OR ^a , - R ^b -OC(O)-N(R ^a ) ₂ , -R ^b -N(R ^a ) ₂ , -R ^b -C(O)R ^a , -R ^b -C(O)OR ^a , -R ^b -C(O)N(R ^a ) ₂ , - R ^b -O-R ^c -C(O)N(R ^a ) ₂ , -R ^b -N(R ^a )C(O)OR ^a , -R ^b -N(R ^a )C(O)R ^a , -R ^b -N(R ^a )S(O) _t R ^a (where t is 1 or 2), -R ^b -S(O) _t R ^a (where t is 1 or 2), -R ^b -S(O) _t OR ^a (where t is 1 or 2), and -R ^b -S(O) _t N(R ^a ) ₂ (where t is 1 or 2); and alkyl, alkenyl, alkynyl, aryl, aralkyl, aralkenyl, aralkynyl, cycloalkyl, cycloalkylalkyl, heterocycloalkyl, heterocycloalkylalkyl, heteroaryl, and heteroarylalkyl, any of which may be optionally substituted by alkyl, alkenyl, alkynyl, halogen, haloalkyl, haloalkenyl, haloalkynyl, oxo (=O), thioxo (=S), cyano (-CN), nitro (-NO ₂ ), imino (=N-H), oximo (=N-OH), hydrazine (=N-NH ₂ ), -R ^b -OR ^a , -R ^b -OC(O)-R ^a , -R ^b -OC(O)-OR ^a , -R ^b -OC(O)-N(R ^a ) ₂ , -R ^b -N(R ^a ) ₂ , - R ^b -C(O)R ^a , -R ^b -C(O)OR ^a , -R ^b -C(O)N(R ^a ) ₂ , -R ^b -O-R ^c -C(O)N(R ^a ) ₂ , -R ^b -N(R ^a )C(O)OR ^a , - R ^b -N(R ^a )C(O)R ^a , -R ^b -N(R ^a )S(O) _t R ^a (where t is 1 or 2), -R ^b -S(O) _t R ^a (where t is 1 or 2), - R ^b -S(O) _t OR ^a (where t is 1 or 2) and -R ^b -S(O) _t N(R ^a ) ₂ (where t is 1 or 2); wherein each R ^a is independently selected from hydrogen, alkyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl, heterocycloalkyl, heterocycloalkylalkyl, heteroaryl, or heteroarylalkyl, wherein each R ^a , valence permitting, may be optionally substituted with alkyl, alkenyl, alkynyl, halogen, haloalkyl, haloalkenyl, haloalkynyl, oxo (=O), thioxo (=S), cyano (-CN), nitro (-NO ₂ ), imino (=N-H), oximo (=N-OH), hydrazine (=N-NH ₂ ), -R ^b -OR ^a , -R ^b -OC(O)-R ^a , -R ^b -OC(O)-OR ^a , - R ^b -OC(O)-N(R ^a ) ₂ , -R ^b -N(R ^a ) ₂ , -R ^b -C(O)R ^a , -R ^b -C(O)OR ^a , -R ^b -C(O)N(R ^a ) ₂ , - R ^b -O-R ^c -C(O)N(R ^a ) ₂ , -R ^b -N(R ^a )C(O)OR ^a , -R ^b -N(R ^a )C(O)R ^a , -R ^b -N(R ^a )S(O) _t R ^a (where t is 1 or 2), -R ^b -S(O) _t R ^a (where t is 1 or 2), -R ^b -S(O) _t OR ^a (where t is 1 or 2) and -R ^b -S(O)tN(R ^a ) ₂ (where t is 1 or 2); and wherein each R ^b is independently selected from a direct bond or a straight or branched alkylene, alkenylene, or alkynylene chain, and each R ^c is a straight or branched alkylene, alkenylene or alkynylene chain. [0052] Double bonds to oxygen atoms, such as oxo groups, are represented herein as both “=O” and “(O)”. Double bonds to nitrogen atoms are represented as both “=NR” and “(NR)”. Double bonds to sulfur atoms are represented as both “=S” and “(S)”. [0053] The phrases “parenteral administration” and “administered parenterally” as used herein means modes of administration other than enteral and topical administration, usually by injection, and includes, without limitation, intravenous, intramuscular, intra-arterial, intrathecal, intracapsular, intraorbital, intracardiac, intradermal, intraperitoneal, transtracheal, subcutaneous, subcuticular, intraarticular, subcapsular, subarachnoid, intraspinal and intrasternal injection and infusion. [0054] The phrase “pharmaceutically acceptable” is employed herein to refer to those compounds, materials, compositions, and/or dosage forms which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of human beings and animals without excessive toxicity, irritation, allergic response, or other problem or complication, commensurate with a reasonable benefit/risk ratio. [0055] The phrase “pharmaceutically acceptable excipient” or “pharmaceutically acceptable carrier” as used herein means a pharmaceutically acceptable material, composition or vehicle, such as a liquid or solid filler, diluent, excipient, solvent or encapsulating material. Each carrier must be “acceptable” in the sense of being compatible with the other ingredients of the formulation and not injurious to the patient. Some examples of materials which can serve as pharmaceutically acceptable carriers include: (1) sugars, such as lactose, glucose and sucrose; (2) starches, such as corn starch and potato starch; (3) cellulose, and its derivatives, such as sodium carboxymethyl cellulose, ethyl cellulose and cellulose acetate; (4) powdered tragacanth; (5) malt; (6) gelatin; (7) talc; (8) excipients, such as cocoa butter and suppository waxes; (9) oils, such as peanut oil, cottonseed oil, safflower oil, sesame oil, olive oil, corn oil and soybean oil; (10) glycols, such as propylene glycol; (11) polyols, such as glycerin, sorbitol, mannitol and polyethylene glycol; (12) esters, such as ethyl oleate and ethyl laurate; (13) agar; (14) buffering agents, such as magnesium hydroxide and aluminum hydroxide; (15) alginic acid; (16) pyrogen- free water; (17) isotonic saline; (18) Ringer’s solution; (19) ethyl alcohol; (20) phosphate buffer solutions; and (21) other non-toxic compatible substances employed in pharmaceutical formulations. [0056] The term “salt” or “pharmaceutically acceptable salt” refers to salts derived from a variety of organic and inorganic counter ions well known in the art. Pharmaceutically acceptable acid addition salts can be formed with inorganic acids and/or organic acids. Inorganic acids from which salts can be derived include, for example, hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, and the like. Organic acids from which salts can be derived include, for example, acetic acid, propionic acid, glycolic acid, pyruvic acid, oxalic acid, maleic acid, malonic acid, succinic acid, fumaric acid, tartaric acid, citric acid, benzoic acid, cinnamic acid, mandelic acid, methanesulfonic acid, ethanesulfonic acid, p-toluenesulfonic acid, salicylic acid, and the like. Pharmaceutically acceptable base addition salts can be formed with inorganic and/or organic bases. Inorganic bases from which salts can be derived include, for example, sodium, potassium, lithium, ammonium, calcium, magnesium, iron, zinc, copper, manganese, aluminum, and the like. Organic bases from which salts can be derived include, for example, primary, secondary, and tertiary amines, substituted amines including naturally occurring substituted amines, cyclic amines, basic ion exchange resins, and the like, specifically such as isopropylamine, trimethylamine, diethylamine, triethylamine, tripropylamine, and ethanolamine. In some embodiments, the pharmaceutically acceptable base addition salt is selected from ammonium, potassium, sodium, calcium, and magnesium salts. [0057] As used herein, “treatment” or “treating” refers to an approach for obtaining beneficial or desired results with respect to a disease, disorder, or medical condition including but not limited to a therapeutic benefit and/or a prophylactic benefit. A therapeutic benefit can include, for example, the eradication or amelioration of the underlying disorder being treated. Also, a therapeutic benefit can include, for example, the eradication or amelioration of one or more of the physiological symptoms associated with the underlying disorder such that an improvement is observed in the subject, notwithstanding that the subject may still be afflicted with the underlying disorder. In certain embodiments, for prophylactic benefit, the compositions are administered to a subject at risk of developing a particular disease, or to a subject reporting one or more of the physiological symptoms of a disease, even though a diagnosis of this disease may not have been made. Treatment via administration of a compound described herein does not require the involvement of a medical professional. [0058] Chemical entities having carbon-carbon double bonds or carbon-nitrogen double bonds may exist in Z- or E- form (or cis- or trans- form). Furthermore, some chemical entities may exist in various tautomeric forms. Unless otherwise specified, all structures described herein are intended to disclose, implicitly or explicitly, all Z-, E- _, and tautomeric forms as well. [0059] A “tautomer” refers to a molecule wherein a proton shift from one atom of a molecule to another atom of the same molecule is possible. The compounds presented herein, in certain embodiments, exist as tautomers. In circumstances where tautomerization is possible, a chemical equilibrium of the tautomers will exist. The exact ratio of the tautomers depends on several factors, including physical state, temperature, solvent, and pH. Some examples of tautomeric equilibria include, but are not limited to:

. [0060] The compounds disclosed herein, in some embodiments, are used in different enriched isotopic forms, e.g., enriched in the content of ² H, ³ H, ¹¹ C, ¹³ C and/or ¹⁴ C. In one particular embodiment, the compound is deuterated in at least one position. Such deuterated forms can be made by the procedure described in U.S. Patent Nos.5,846,514 and 6,334,997. As described in U.S. Patent Nos.5,846,514 and 6,334,997, deuteration can improve the metabolic stability and or efficacy of drugs, thus increasing the duration of action of drugs. [0061] Unless otherwise stated, compounds described herein are intended to include compounds which differ only in the presence of one or more isotopically enriched atoms. For example, compounds having the present structures except for the replacement of one or more proton(s) by one or more deuterium(deuteria) or tritium(tritia), or combinations thereof, or except for the replacement of one or more ¹² C atom(s) in the structure by one or more ¹³ C atom(s), one or more ¹⁴ C atom(s), or combinations thereof, in the structure are within the scope of the present disclosure. [0062] The compounds of the present disclosure optionally comprise unnatural proportions of atomic isotopes at one or more atom(s) that constitute such compounds. For example, the compounds may be labeled with one or more isotope(s), such as for example, deuterium ( ² H), tritium ( ³ H), iodine-125 ( ¹²⁵ I) or carbon-14 ( ¹⁴ C). Isotopic substitution with ² H, ¹¹ C, ¹³ C, ¹⁴ C, ¹⁵ C, ¹² N, ¹³ N, ¹⁵ N, ¹⁶ N, ¹⁷ O, ¹⁸ O, ¹⁴ F, ¹⁵ F, ¹⁶ F, ¹⁷ F, ¹⁸ F, ³³ S, ³⁴ S, ³⁵ S, ³⁶ S, ³⁵ Cl, ³⁷ Cl, ⁷⁹ Br, ⁸¹ Br, and ¹²⁵ I are all contemplated. All isotopic variations of the compounds of the present invention, whether radioactive or not, are encompassed within the scope of the present invention. [0063] In certain embodiments, the compounds disclosed herein have some or all of the ¹ H atoms replaced with ² H atoms. The methods of synthesis for deuterium-containing compounds are known in the art and include, by way of non-limiting example only, the following synthetic methods. [0064] Deuterium-substituted compounds are synthesized using various methods such as described in: Dean, Dennis C.; Editor. Recent Advances in the Synthesis and Applications of Radiolabeled Compounds for Drug Discovery and Development. [In: Curr., Pharm. Des., 2000; 6(10)] 2000, 110 pp; George W.; Varma, Rajender S. The Synthesis of Radiolabeled Compounds via Organometallic Intermediates, Tetrahedron, 1989, 45(21), 6601-21; and Evans, E. Anthony. Synthesis of radiolabeled compounds, J. Radioanal. Chem., 1981, 64(1-2), 9-32. [0065] Deuterated starting materials are readily available and are subjected to the synthetic methods described herein to provide for the synthesis of deuterium-containing compounds. Large numbers of deuterium-containing reagents and building blocks are available commercially from chemical vendors, such as MilliporeSigma. [0066] Included in the present disclosure are salts, particularly pharmaceutically acceptable salts, of the compounds described herein. The compounds of the present disclosure that comprise one or more sufficiently acidic functional group(s), one or more sufficiently basic functional group(s), or both one or more sufficiently acidic functional group(s) and one or more sufficiently basic functional group(s) to form a salt (particularly a pharmaceutically acceptable salt), can react with any of a number of inorganic organic bases or inorganic or organic acids, to form a salt. ; combinations thereof); or combinations thereof. Alternatively, compounds that are inherently charged, such as those with a quaternary nitrogen, can form a salt with an appropriate counterion. [0067] The compounds and salts described herein may in some cases exist as diastereomers, enantiomers, or other stereoisomeric forms. Unless otherwise specified (e.g., in tables of biological data), the structures disclosed herein are intended to include, explicitly or implicitly, disclosure of all diastereomeric (e.g., epimeric) and enantiomeric forms as well as mixtures thereof. Separation of stereoisomers may be performed by chromatography or by forming diastereomers and separating by recrystallization, or chromatography, or any combination thereof. (Jean Jacques, Andre Collet, Samuel H. Wilen, “Enantiomers, Racemates and Resolutions”, John Wiley And Sons, Inc., 1981, herein incorporated by reference for this disclosure). Stereoisomers may also be obtained by stereoselective synthesis. [0068] In certain embodiments, the compounds or salts of the compounds may be prodrugs. For example, in some embodiments, a hydroxyl in the parent compound is presented as an ester or a carbonate, or carboxylic acid present in the parent compound is presented as an ester. The term “prodrug” is intended to encompass compounds which, under physiologic conditions, are converted into pharmaceutical agents of the present disclosure. One method for making a prodrug is to include one or more selected moieties which are hydrolyzed under physiologic conditions to reveal the desired molecule. In other embodiments, the prodrug is converted by an enzymatic activity of the host animal such as specific target cells in the host animal. For example, esters or carbonates (e.g., esters or carbonates of alcohols or carboxylic acids and esters of phosphonic acids) may be prodrugs of the present disclosure. In some embodiments, a prodrug for an amine might rely on enzymatic activation. In some embodiments, a prodrug for an amine might rely on physiological chemical conditions for release of the drugs. In some embodiments, a prodrug for an amine may be selected from an amide, a carbonate, an N-acyloxy alkyl derivative, an N-acyloxy carbonyl derivative, a beta-aminoketone, an (oxodioxolenyl)methyl derivative, an N-Mannich base, an imine (e.g., a Schiff base), an enamine, an enaminone, an azo compound, a system capable of undergoing lactonization, a tetrahydrothiadiazine-2-thione, a redox system, or a PEG. [0069] Prodrug forms of the herein described compounds, wherein the prodrug is metabolized in vivo to produce a compound as set forth herein are included within the scope of the claims. In some cases, some of the herein-described compounds may be a prodrug for another derivative or active compound. [0070] Prodrugs are often useful because, in some situations, they may be easier to administer than the parent drug. They may, for instance, be bioavailable by oral administration whereas the parent is not. Prodrugs may help enhance the cell permeability of a compound relative to the parent drug. The prodrug may also have improved solubility in pharmaceutical compositions over the parent drug. Prodrugs may be designed as reversible drug derivatives, for use as modifiers to enhance drug transport to site-specific tissues or to increase drug residence inside of a cell. [0071] In some embodiments, the design of a prodrug increases the lipophilicity of the pharmaceutical agent. In some embodiments, the design of a prodrug increases the effective water solubility. See, e.g., Fedorak et al., Am. J. Physiol., 269:G210-218 (1995); McLoed et al., Gastroenterol, 106:405-413 (1994); Hochhaus et al., Biomed. Chrom., 6:283-286 (1992); J. Larsen and H. Bundgaard, Int. J. Pharmaceutics, 37, 87 (1987); J. Larsen et al., Int. J. Pharmaceutics, 47, 103 (1988); Sinkula et al., J. Pharm. Sci., 64:181-210 (1975); T. Higuchi and V. Stella, Pro-drugs as Novel Delivery Systems, Vol.14 of the A.C.S. Symposium Series; and Edward B. Roche, Bioreversible Carriers in Drug Design, American Pharmaceutical Association and Pergamon Press, 1987, all incorporated herein for such disclosure). According to another embodiment, the present disclosure provides methods of producing the above-defined compounds. The compounds may be synthesized using conventional techniques. Advantageously, these compounds are conveniently synthesized from readily available starting materials. [0072] Synthetic chemistry transformations and methodologies useful in synthesizing the compounds described herein are known in the art and include, for example, those described in R. Larock, Comprehensive Organic Transformations (1989); T. W. Greene and P. G. M. Wuts, Protective Groups in Organic Synthesis, 2d. Ed. (1991); L. Fieser and M. Fieser, Fieser and Fieser’s Reagents for Organic Synthesis (1994); and L. Paquette, ed., Encyclopedia of Reagents for Organic Synthesis (1995). Compounds [0073] The following comprises a discussion of compounds and salts thereof that may be used in the methods of the disclosure. In certain embodiments, the compounds and salts are described in Formulas (I), (II), and (III). [0074] In one aspect, disclosed herein is a compound represented by Formula (I): or a salt thereof, wherein: X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (-O-), wherein at least one of X ¹ , X ² , X ³ , or X ⁴ is N; and no more than two of X ¹ , X ² , X ³ , and X ⁴ are N; each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , - S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a ; R ² is selected from: C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , - S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; R ⁸ is selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , and -CN; each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)R ^10c , -N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c _, - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , - OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and each R ^10a , R ^10b , R ^10c , R ^10d , and R ^10e is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0075] In one aspect, disclosed herein is a compound represented by Formula (I): or a salt thereof, wherein: X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (-O-), wherein at least one of X ¹ , X ² , X ³ , or X ⁴ is N; and no more than two of X ¹ , X ² , X ³ , and X ⁴ are N; each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , - S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a ; R ² is selected from: C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , - S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; R ⁸ is selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , and -CN; each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)R ^10c , -N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c , - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , - OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and each R ^10a , R ^10b , R ^10c , R ^10d , and R ^10e is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl; wherein if X ³ and X ¹ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , - N(R ¹⁰ ) ₂ , -NO ₂ , and -CN. [0076] In one aspect, disclosed herein is a compound represented by Formula (IX): or a salt thereof, wherein: X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (-O-), wherein at least one of X ¹ , X ² , X ³ , or X ⁴ is N; and no more than two of X ¹ , X ² , X ³ , and X ⁴ are N; each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , and -C(O)N(R ^10a ) ₂ ; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -CN, C _1-6 alkyl optionally substituted with one or more R ^9a ; R ² is selected from: C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -CN, =O, C _3-10 carbocycle, and 3- to 10- membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , =O, -CN, and C _1-6 alkyl, wherein each C _1-6 alkyl is optionally substituted with one or more R ^9b ; R ³ and R ⁴ are each independently selected from: hydrogen and -OH; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁷ is selected from hydrogen and C _1-6 alkyl; R ⁸ is selected from hydrogen and C _1-6 alkyl; each R ^9a , R ^9b , R ^9c , is independently selected from halogen, -OH, -OMe -CN, and C _1-3 alkyl; each R ^10a , R ^10b , R ^10c , R ^10d , and R ^10e is independently selected from: hydrogen; C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle. [0077] In one aspect, disclosed herein is a compound represented by Formula (IY): or a salt thereof, wherein: X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (-O-), wherein at least one of X ¹ , X ² , X ³ , or X ⁴ is N; and no more than two of X ¹ , X ² , X ³ , and X ⁴ are N; each R ¹ is independently selected from: hydrogen, fluoro, chloro, bromo, -CN, -OH, -O(C _1-6 alkyl), -O(C _1-6 haloalkyl), -O(C _3-10 carbocycle), -O(3- to 10- membered heterocycle), -C(O)NH ₂ , C _1-6 alkyl, C _1-6 haloalkyl, and C _3-10 carbocycle, wherein the C _3-10 carbocycle is optionally substituted with one or more halogen; R ² is selected from: C _1-6 alkyl, optionally substituted with one or more substituents independently selected from -F, Cl, -OH, and C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from -F, - Cl, and -CN; R ³ and R ⁴ are each independently selected from: hydrogen, -OH, and methyl; R ⁵ and R ⁶ are each independently selected from hydrogen and C _1-3 alkyl; R ⁷ is selected from: hydrogen and C _1-6 alkyl; R ⁸ is selected from hydrogen and C _1-6 alkyl; and each R ^9a , R ^9b , R ^9c , is independently selected from halogen, -OH, -OMe -CN, and C _1-3 alkyl. [0078] In certain embodiments, for a compound or salt of Formula (I), X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (-O-). In some embodiments, at least one of X ¹ , X ² , X ³ , or X ⁴ is N. In some embodiments, no more than two of X ¹ , X ² , X ³ , and X ⁴ are N. In some embodiments, X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (- O-), wherein at least one of X ¹ , X ² , X ³ , or X ⁴ is N; and no more than two of X ¹ , X ² , X ³ , and X ⁴ are N. In some embodiments, no more than one of X ¹ , X ² , X ³ , and X ⁴ is N. In some embodiments, no more than two of X ¹ , X ² , X ³ , and X ⁴ is N. In some embodiments, no more than three of X ¹ , X ² , X ³ , and X ⁴ is N. In some embodiments, at least one of X ¹ , X ² , X ³ , or X ⁴ is N. In some embodiments, at least two of X ¹ , X ² , X ³ , or X ⁴ is N. In some embodiments, at least three of X ¹ , X ² , X ³ , or X ⁴ is N. In some embodiments, at least one of X ¹ , X ² , X ³ , or X ⁴ is N, and no more than two of X ¹ , X ² , X ³ , and X ⁴ are N. In some embodiments, X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), N, and N ⁺ (-O-). In some embodiments, X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ) and N. In some embodiments, X ¹ , X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, one of X ¹ , X ² , X ³ , or X ⁴ is N. In some embodiments, two of X ¹ , X ² , X ³ , and X ⁴ are N. In some embodiments, three of X ¹ , X ² , X ³ , and X ⁴ are N. In some embodiments, one of X ¹ , X ² , X ³ , or X ⁴ is C(R ¹ ). In some embodiments, two of X ¹ , X ² , X ³ , and X ⁴ are C(R ¹ ). In some embodiments, three of X ¹ , X ² , X ³ , and X ⁴ are C(R ¹ ). In some embodiments, four of X ¹ , X ² , X ³ , and X ⁴ are C(R ¹ ). In some embodiments, X ¹ is N. In some embodiments, X ² is N. In some embodiments, X ³ is N. In some embodiments, X ⁴ is N. In some embodiments, X ¹ is C(R ¹ ). In some embodiments, X ² is C(R ¹ ). In some embodiments, X ³ is C(R ¹ ). In some embodiments, X ⁴ is C(R ¹ ). In some embodiments, X ¹ is C(H). In some embodiments, X ² is C(H). In some embodiments, X ³ is C(H). In some embodiments, X ⁴ is C(H). In some embodiments, two of X ¹ , X ² , X ³ , and X ⁴ are N. In some embodiments, two of X ¹ , X ² , X ³ , and X ⁴ are N, and the two of two of X ¹ , X ² , X ³ , and X ⁴ which are N are not bound (e.g., covalently) to each other. In some embodiments, X ¹ and X ³ are N. In some embodiments, X ² and X ⁴ are N. In some embodiments, X ¹ is N, and X ² , X ³ , and X ⁴ are C(R ¹ ). In some embodiments, X ² is N, and X ¹ , X ³ , and X ⁴ are C(R ¹ ). In some embodiments, X ³ is N, and X ¹ , X ² , and X ⁴ are C(R ¹ ). In some embodiments, X ⁴ is N, and X ¹ , X ² , and X ³ are C(R ¹ ). In some embodiments, X ¹ is N, and X ² , X ³ , and X ⁴ are C(H). In some embodiments, X ² is N, and X ¹ , X ³ , and X ⁴ are C(H). In some embodiments, X ³ is N, and X ¹ , X ² , and X ⁴ are C(H). In some embodiments, X ⁴ is N, and X ¹ , X ² , and X ³ are C(H). [0079] In some embodiments, X ² is N, and X ¹ is C(CF ₃ ). In some embodiments X ² is N, X ¹ is C(CF ₃ ), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ² is N, and R ² is In some embodiments, X ² is N, R ² is and X ¹ is C(CF ₃ ). In some embodiments, X ² is N, R ² is X ¹ is C(CF ₃ ) ^{3 4} , X is C(H), and X is C(H). In some embodiments, X ² is N, and X ¹ is C(CN). In some embodiments, X ² is N, X ¹ is C(CN), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ² is N, and R ² is In some embodiments, X ² is N, R ² is , and X ¹ is C(F). In some embodiments, X ² is N, R ² is , X ¹ is C ^{3 4} (F), X is C(H), and X is C(H). [0080] In some embodiments, X ² is C(O(C _1-6 alkyl)). In some embodiments, X ² is C(OMe). In some embodiments, X ¹ is N, and X ² is C(O(C _1-6 alkyl)). In some embodiments, X ¹ is N, X ² is C(O(C _1-6 alkyl)), X ³ is C(H), and X ⁴ C(H). In some embodiments, X ¹ is N, and X ² is C(OMe). In some embodiments, X ¹ is N, X ² is C(OMe), X ³ is C(H), and X ⁴ C(H). In some embodiments, X ¹ is N, and X ² is C(O(C _1-6 alkyl)), and R ³ and R ⁴ come together to form a cyclopropyl. In some embodiments, X ¹ is N, X ² is C(O(C _1-6 alkyl)), X ³ is C(H), and X ⁴ C(H), and R ³ and R ⁴ come together to form a cyclopropyl. In some embodiments, X ¹ is N, and X ² is C(OMe), and R ³ and R ⁴ come together to form a cyclopropyl. In some embodiments, X ¹ is N, X ² is C(OMe), X ³ is C(H), and X ⁴ C(H), and R ³ and R ⁴ come together to form a cyclopropyl. [0081] In some embodiments, X ² is N, and X ¹ is C(F). In some embodiments, X ² is N, X ¹ is C(F), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ² is N, and R ² is In some embodiments, X ² is N, R ² is and X ¹ is ² C(F). In some embodiments, X is N, R ² is X ¹ is ^{3 4 2} C(F), X is C(H), and X is C(H). In some embodiments, X is N, and X ¹ is C(Cl). In some embodiments, X ² is N, X ¹ is C(Cl), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ² is N, R ² is and X ¹ is C(Cl) ^{2 2} . In some embodiments, X is N, R is X ¹ is C(Cl), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ² is N, and X ¹ is C(CN). In some embodiments, X ² is N, X ¹ is C(CN), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ² is N, and R ² is In some embodiments, X ² is N, R ² is and X ¹ is C(CN). In some embodim ^{2 2 1} ents, X is N, R is X is C(CN), X ³ is C(H), and X ⁴ is C(H). [0082] In some embodiments, X ² , X ³ , and X ⁴ are each independently selected from C(H). In some embodiments, X ¹ is N, and X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ¹ is N, and X ² , X ³ , and X ⁴ are each independently selected from C(H). In some embodiments, X ¹ is N, and X ² , X ³ , and X ⁴ are each independently selected from C(R ¹ ), and R ³ and R ⁴ come together to form a cyclopropyl. In some embodiments, X ¹ is N, and X ² , X ³ , and X ⁴ are each independently selected from C(H), and R ³ and R ⁴ come together to form a cyclopropyl. [0083] In some embodiments, X ² is C(CN). In some embodiments, X ¹ is N, and X ² is C(Cl). In some embodiments, X ¹ is N, and X ² is C(Cl), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ¹ is N, and X ² is C(Cl), and X ³ and X ⁴ are each independently selected from C(H). [0084] In some embodiments, X ¹ is N, and X ² is C(CN). In some embodiments, X ¹ is N, and X ² is C(CN), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ¹ is N, and X ² is C(CN), and X ³ and X ⁴ are each independently selected from C(H). [0085] In some embodiments, X ¹ is C(Br). In some embodiments, X ¹ is N, and X ² is C(Br). In some embodiments, X ¹ is N, and X ² is C(Br), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ¹ is N, and X ² is C(Br), and X ³ and X ⁴ are each independently selected from C(H). In some embodiments, X ¹ is N, and X ² is C(Br), and R ⁵ is H, and R ⁶ is methyl. In some embodiments, X ¹ is N, and X ² is C(Br), and X ³ and X ⁴ are each independently selected from C(R ¹ ) , and R ⁵ is H, and R ⁶ is methyl. In some embodiments, X ¹ is N, and X ² is C(Br), and X ³ and X ⁴ are each independently selected from C(H), and R ⁵ is H, and R ⁶ is methyl. [0086] In some embodiments, X ² is C(F). In some embodiments, X ¹ is N, and X ² is C(F). In some embodiments, X ¹ is N, and X ² is C(F), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ¹ is N, and X ² is C(F), and X ³ and X ⁴ are each independently selected from C(H). [0087] In some embodiments, X ¹ is C(CF ₃ ). In some embodiments, X ² is N, and X ¹ is C(CF ₃ ). In some embodiments, X ² is N, and X ¹ is C(CF ₃ ), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ² is N, and X ¹ is C(CF ₃ ), and X ³ and X ⁴ are each independently selected from C(H). [0088] In some embodiments, X ¹ is C(OCF ₃ ). In some embodiments, X ² is N, and X ¹ is C(OCF ₃ ). In some embodiments, X ² is N, and X ¹ is C(OCF ₃ ), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ² is N, and X ¹ is C(OCF ₃ ), and X ³ and X ⁴ are each independently selected from C(H). [0089] In some embodiments, X ² is N, and X ¹ is C(CN). In some embodiments, X ² is N, X ¹ is C(CN), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ² is N, and R ² is In some embodiments, X ² is N, R ² is a ^{1 2} nd X is C(CN). In some embodiments, X is N, R ² is X ¹ is C(CN), X ³ is C(H), and X ⁴ is C(H). In ¹ some embodiments, X is N, and X ² is C(OR ^10a ). In some embodiments, X ¹ is N, and X ² is C(OMe). In some embodiments, X ¹ is N, X ² is C(OR ^10a ), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, X ² is C(OMe), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, and R ² is In some embodiments, X ¹ is N, R ² is a ^{2 10a} nd X is C(OR ). In some embodiments, X ¹ is N, R ² is ² , and X is C(OMe). In some embodiments, X ¹ is N, R ² is X ² is C(OR ^10a ), X ³ is C(H), an ⁴ d X is C(H). In some embodiments, X ¹ is N, R ² is ^{2 3 4} X is C(OMe), X is C(H), and X is C(H). In some embodiments, X ¹ is N, R ² is X ² is C(OMe), X ³ is C(H), X ⁴ is C(H), and R ³ and R ⁴ come together to form a cyclopropyl ring. In some embodiments, X ¹ is N, X ² is C(H), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, and R ² is In some embodiments, X ¹ is N, R ² is X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, R ² is X ³ is C(H), X ⁴ is C(H), and R ³ and R ⁴ come together to form a cyclopropyl ring. In some embodiments, X ¹ is N, and X ² is C(Cl). In some embodiments, X ¹ is N, X ² is C(Cl), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, and R ² is In some emb ^{1 2 2} odiments, X is N, R is and X is C(CN). In some embodiments, X ¹ is N, R ² is X ² is C(CN), X ³ is ⁴ C(H), and X is C(H). In some embodiments, X ¹ is N, and X ² is C(CN). In some embodiments, X ¹ is N, X ² is C(CN), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, and R ² is In some embodiments, X ¹ is N, R ² is ² and X is C(CN). In some embodiments, X ¹ is N, R ² is ^{2 3 4} X is C(CN), X is C(H), and X is C(H). In some embodiments, X ¹ is N, R ² is , X ² is C(CN), X ³ is C(H), ⁴ X is C(H), and R ³ and R ⁴ come together to form a cyclopropyl ring. In some embodiments, X ¹ is N, X ² is C(H), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, and R ² is . In some embodiments, X ¹ is N, R ² is and X ² is C(H). In some emb ^{1 2} odiments, X is N, R is , X ² is C(H), X ³ is C(H), and X ⁴ is C(H). In some embodiments, some embodiments, X ¹ is N, and X ² is C(CN). In some embodiments, X ¹ is N, X ² is C(CN), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, and R ² is In some embodiments, X ¹ is N, R ² is , X ² is C(CN). In some emb ^{1 2} odiments, X is N, R is X ² is C(CN), X ³ is C(H), and X ⁴ is C(H). In some embodiments, some embodiments, X ¹ is N, and X ² is C(F). In some embodiments, X ¹ is N, X ² is C(F), X ³ is C(H), and X ⁴ is C(H). In some embodiments, X ¹ is N, and R ² is In some embodiments, X ¹ is N, R ² is and X ² is C(F). In some embo ^{1 2} diments, X is N, R is X ² is C ^{3 4} (F), X is C(H), and X is C(H). [0090] In some embodiments, X ² is C(F). In some embodiments, for a compound or salt of Formula (I), X ¹ is N, X ² is F, R ⁵ is methyl, and R ⁶ is hydrogen. [0091] In some embodiments, X ² is C(CF ₃ ). In some embodiments, X ¹ is N, and X ² is C(CF ₃ ). In some embodiments, X ¹ is N, and X ² is C(CF ₃ ), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ¹ is N, and X ² is C(CF ₃ ), and X ³ and X ⁴ are each independently selected from C(H). [0092] In some embodiments, X ¹ is C(Cl). In some embodiments, X ³ is N, and X ¹ is C(R ¹ ). In some embodiments, X ³ is N, and X ¹ is C(R ¹ ), and X ² and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ³ is N, and X ¹ is C(Cl). In some embodiments, X ³ is N, and X ¹ is C(Cl), and X ² is C(R ¹ ). In some embodiments, X ³ is N, and X ¹ is C(Cl), and X ² is C(R ¹ ), and X ⁴ is C(R ¹ ). In some embodiments, X ³ is N, and X ¹ is C(Cl), and X ² is C(H). In some embodiments, X ³ is N, and X ¹ is C(Cl), and X ² is C(H), and X ⁴ is C(H). [0093] In some embodiments, X ¹ is C(OCH ₂ CHF ₂ ) (e.g., in some embodiments, X ¹ is a carbon bearing a 2,2-difluoroethoxy moiety). In some embodiments, X ² is N, and X ¹ is C(OCH ₂ CHF ₂ ). In some embodiments, X ² is N, and X ¹ is C(OCH ₂ CHF ₂ ), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ² is N, and X ¹ is C(OCH ₂ CHF ₂ ), and X ³ and X ⁴ are each independently selected from C(H). [0094] In some embodiments, X ¹ is C(OCH ₂ CH ₃ ). In some embodiments, X ² is N, and X ¹ is C(OCH ₂ CH ₃ ). In some embodiments, X ² is N, and X ¹ is C(OCH ₂ CH ₃ ), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ² is N, and X ¹ is C(OCH ₂ CH ₃ ), and X ³ and X ⁴ are each independently selected from C(H). [0095] In some embodiments, X ² is C(OCH ₂ CH ₃ ). In some embodiments, X ¹ is N, and X ² is C(OCH ₂ CH ₃ ). In some embodiments, X ¹ is N, and X ² is C(OCH ₂ CH ₃ ), and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ¹ is N, and X ² is C(OCH ₂ CH ₃ ), and X ³ and X ⁴ are each independently selected from C(H). [0096] In some embodiments, X ¹ is In some embodiment ^{2 1} s, X is N, and X is In some embodiments, X ² is N, and X ¹ is and X ³ and X ⁴ are each independently selected from C(R ¹ ). In some embodiments, X ² is N, and X ¹ is and X ³ and X ⁴ are each independently selected from C(H). [0097] In certain embodiments, for a compound or salt of Formula (I), each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -C(O)OR ^10a , -OC(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , - SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , - OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , - NO ₂ , =O, =S, =N(R ^10a ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a . [0098] In certain embodiments, for a compound or salt of Formula (I), each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , and - C(O)N(R ^10a ) ₂ ; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10- membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -CN, C _1-6 alkyl optionally substituted with one or more R ^9a . [0099] In some embodiments, each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , and -C(O)N(R ^10a ) ₂ ; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , and - N(R ^10a ) ₂ ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , and -N(R ^10a ) ₂ . [0100] In some embodiments, each R ¹ is independently selected from: hydrogen; halogen, CN, - OR ^10a , and -C(O)N(R ^10a ) ₂ ; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, and C _3-10 carbocycle optionally substituted with one or more substituents independently selected from halogen. [0101] In some embodiments, R ¹ is independently selected from hydrogen. [0102] In some embodiments, each R ¹ is independently selected from hydrogen, halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; [0103] In some embodiments, each R ¹ is independently selected from hydrogen, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a _, -C(O)OR ^10a , -OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a _. [0104] In some embodiments, each R ¹ is independently selected from hydrogen, C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , - C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), - CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a . [0105] In some embodiments, each R ¹ is independently selected from: hydrogen; halogen, -NO ₂ , -CN, -CN, -OH, -SH, -NO ₂ , -NH ₂ , -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , and -NH(C _1-6 alkyl); C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , -CN, -CN, -OH, -SH, -NO ₂ , - NH ₂ , -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle and 3- to 10- membered heterocycle; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, - NO ₂ , -CN, -CN, -OH, -SH, -NO ₂ , -NH ₂ , -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl. [0106] In some embodiments, each R ¹ is independently selected from C _1-3 alkyl optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , -CN, -CN, -OH, -SH, -NO ₂ , -NH ₂ , -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle and 3- to 10-membered heterocycle. In some embodiments, each R ¹ is independently selected from C _3-5 carbocycle is optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , -CN, -CN, -OH, -SH, -NO ₂ , -NH ₂ , -O-C _1-6 alkyl, -S- C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl. In some embodiments, each R ¹ is independently selected from hydrogen, -CN, -OH, -OMe, -OEt, -OiPr, - F, -Cl, -Br, -Me, -Et, -CF ₃ , -CHF ₂ , -CH ₂ F, OCF ₃ , -OCHF ₂ , -OCH ₂ F, -C(O)NH ₂ , , , , In some embodiments, ea ¹ ch R is independently selected from hydrogen, -CN, -OH, -OMe, -OEt, -OiPr, -F, -Cl, -Br, -Me, -Et, - CF ₃ , -CHF ₂ , -CH ₂ F, OCF ₃ , -C(O)NH ₂ , , , , , and 1 In some embodiments, each R is independently selected from hydrogen, -CN, -OH, - OMe, -OEt, -OiPr, -F, -Cl, -Br, -Me, -Et, -CF ₃ , OCF ₃ , -C(O)NH ₂ , , , In some embodiments, eac ¹ h R is independently selected from hydrogen, -CN, -OH, -OMe, -OEt, -OiPr, -F, -Cl, -Br, -Me, -CF ₃ , OCF ₃ , -C(O)NH ₂ , 1 In some embodiments, each R is independently selected from hydrogen, -CF ₃ , -CN, -OR ^10a (e.g., -OMe), -F, -Cl, -OCF ₃ , and methyl. In some embodiments, each R ¹ is independently selected from hydrogen, -CF ₃ , -CN, - OMe, -F, -Cl, -OCF ₃ , and methyl. In some embodiments, each R ¹ is independently selected from hydrogen, -CF ₃ , -CN, -OR ^10a (e.g., -OMe), -F, -Cl, and -OCF ₃ . In some embodiments, each R ¹ is independently selected from hydrogen, -CF ₃ , -CN, -OMe, -F, -Cl, and -OCF ₃ . In some embodiments, each R ¹ is independently selected from hydrogen, -CF ₃ , -CN, -OMe, -F, and -Cl. In some embodiments, each R ¹ is independently selected from hydrogen, -CF ₃ , -CN, -OMe, and - F. In some embodiments, each R ¹ is independently selected from hydrogen, -CF ₃ , -CN, and - OMe. In some embodiments, each R ¹ is independently selected from hydrogen, -CF ₃ , and -CN. In some embodiments, each R ¹ is independently selected from hydrogen and -CN. In some embodiments, each R ¹ is independently selected from hydrogen and -CF ₃ . In some embodiments, each R ¹ is independently selected from hydrogen and -CN. In some embodiments, each R ¹ is independently selected from hydrogen and -OR ^10a . In some embodiments, each R ¹ is independently selected from hydrogen and -OMe. In some embodiments, each R ¹ is independently selected from hydrogen and -F. In some embodiments, each R ¹ is independently selected from hydrogen and -Cl. In some embodiments, each R ¹ is independently selected from hydrogen and -OCF ₃ . In some embodiments, each R ¹ is independently selected from hydrogen and C _1-6 alkyl. In some embodiments, each R ¹ is independently selected from hydrogen and methyl. In some embodiments, each R ¹ is independently selected from hydrogen, F, and CN. In some embodiments, each R ¹ is independently selected from hydrogen and CF ₂ H. In some embodiments, each R ¹ is independently selected from hydrogen, halogen, and -CN. In some embodiments, each R ¹ is independently selected from hydrogen, F, and -CN. In some embodiments, each R ¹ is independently selected from hydrogen and F. In some embodiments, each R ¹ is independently selected from hydrogen and CN. In some embodiments, each R ¹ is independently selected from hydrogen. [0107] In certain embodiments, for a compound or salt of Formula (I), R ² is selected from: C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , - OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), - CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b . [0108] In some embodiments, R ² is selected from C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , - OC(O)R ^10b , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, - CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b . [0109] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10- membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b . [0110] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, - CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b . [0111] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b . [0112] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, - CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b . [0113] In some embodiments, R ² is C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , - OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10- membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , - NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C _1-6 alkyl, optionally substituted with one or more substituents independently selected from F, OH, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C _1-6 alkyl, optionally substituted with one or more substituents independently selected from F, OH, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle is independently selected from phenyl, 2-pyridyl, and 3-pyridyl, and each phenyl, 2-pyridyl, and 3-pyridyl is optionally substituted with one or more R ^9b . In some embodiments, R ² is C ₂ alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C ₂ alkyl, optionally substituted with one or more substituents independently selected from F, OH, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b . In some embodiments, R ² is C ₂ alkyl, optionally substituted with one or more substituents independently selected from F, OH, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle is independently selected from phenyl, 2-pyridyl, and 3-pyridyl, and each phenyl, 2-pyridyl, and 3-pyridyl is optionally substituted with one or more R ^9b . [0114] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , - OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b . [0115] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10- membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, -CN, and C _1-6 alkyl, wherein the C _1-6 alkyl is optionally substituted with one or more R ^9b . [0116] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -NO ₂ , =O, -CN, and C _1-6 alkyl. [0117] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, - CN, and C _1-6 alkyl. [0118] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, -CN, and C _1-6 alkyl. [0119] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , C _3-10 carbocycle and 3- to 10- membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, and -CN. [0120] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from F, OH, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from F, and -CN. [0121] In some embodiments, R ² is selected from C _1-6 alkyl, optionally substituted with one or more substituents independently selected from F, OH, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle is independently selected from phenyl, 2-pyridyl, and 3-pyridyl, and each phenyl, 2-pyridyl, and 3-pyridyl is optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from F, and -CN. [0122] In some embodiments, R ² is selected from C ₂ alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , C _3-10 carbocycle and 3- to 10- membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from F, and -CN. [0123] In some embodiments, R ² is selected from C ₂ alkyl, optionally substituted with one or more substituents independently selected from F, OH, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from F, and -CN. [0124] In some embodiments, R ² is a substituent represented by the following: , wherein, Q ¹ is a C _1-3 alkyl optionally substituted with one or more substituents selected from OH and halo; Y ¹ and Y ² are each independently selected from N and C(Q ³ ); and each Q ² is independently selected from halo and CN; each Q ³ is independently selected from hydrogen, halo and CN; and n is 0, 1, or 2. [0125] In some embodiments, Q ¹ is a C ₁ alkyl optionally substituted with one or more substituents selected from OH and fluoro; each Q ² is independently selected from fluoro and CN; and each Q ³ is independently selected from hydrogen, fluoro and CN. In some embodiments, each Q ² is selected from F and H. In some embodiments, each Q ² is selected from CN and H. In some embodiments, each Q ³ is selected from F. In some embodiments, each Q ³ is selected from F and H. In some embodiments, each Q ³ is selected from CN and H. In some embodiments, each Q ³ is selected from F. [0126] In some embodiments, R ² is selected from , , [0127] In some embodiments, R ² is selected from C _1-6 alkyl optionally substituted with one or more substituents independently selected from OH and C _3-10 carbocycle, wherein the C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from halogen and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle optionally substituted with one or more substituents independently selected from halogen and -CN. In some embodiments, R ² is selected from C _1-6 alkyl optionally substituted with one or more C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from halogen and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle optionally substituted with one or more substituents independently selected from halogen and -CN. In some embodiments, R ² is selected from C _1-6 alkyl optionally substituted with one or more C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from F and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle optionally substituted with one or more substituents independently selected from -F and -CN. In some embodiments, R ² is selected from C ₂ alkyl optionally substituted with one or more C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from halogen and -CN; and C _{3- 10} carbocycle and 3- to 10-membered heterocycle optionally substituted with one or more substituents independently selected from halogen and -CN. [0128] In some embodiments, R ² is selected from C ₂ alkyl optionally substituted with one or more C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from -F and -CN; and C _3-10 carbocycle and 3- to 10- membered heterocycle optionally substituted with one or more substituents independently selected from -F and -CN. In some embodiments, R ² is a C ₂ alkyl optionally substituted with one or more C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from -F and -CN. In some embodiments, R ² is a C ₂ alkyl optionally substituted with one or more C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from -F. In some embodiments, R ² is a C ₂ alkyl optionally substituted with one or more C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from -CN. [0129] In some embodiments, R ² is a C _3-10 carbocycle and 3- to 10-membered heterocycle optionally substituted with one or more substituents independently selected from -F and -CN. [0130] In certain embodiments, for a compound or salt of Formula (I), R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . [0131] In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and - CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . [0132] In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more halogen; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more halogen; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle. [0133] In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more halogen; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle. In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more halogen. In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C ₁ alkyl. In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen. [0134] In some embodiments, R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _{3- 10} carbocycle. In some embodiments, the 3- to 10- membered heterocycle or C _3-10 carbocycle formed by R ³ together with R ⁴ is selected from cyclopropyl and oxetanyl. In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C ₁ alkyl; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle. In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C ₁ alkyl; or R ³ together with R ⁴ form a C _3-10 carbocycle. In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C ₁ alkyl; or R ³ together with R ⁴ form a C _3-10 carbocycle, wherein the C _3-10 carbocycle is cyclopropane. [0135] In some embodiments, R ³ and R ⁴ are each hydrogen. In some embodiments, R ³ is hydrogen. In some embodiments, R ⁴ is hydrogen. In some embodiments, R ³ is hydrogen, and R ⁴ is methyl. In some embodiments, R ³ is hydrogen, and R ⁴ is C _1-6 alkyl. In some embodiments, R ³ is -H, and R ⁴ is -OH. In some embodiments, R ³ is -OH, and R ⁴ is -H. In some embodiments, R ³ is -OH. [0136] In certain embodiments, for a compound or salt of Formula (I), R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . [0137] In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _{3- 10} carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10- membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . [0138] In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl .In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen and C _1-3 alkyl. In some embodiments, R ⁵ is hydrogen. In some embodiments, R ⁶ is hydrogen. In some embodiments, R ⁵ and R ⁶ are each hydrogen. In some embodiments, R ⁵ is hydrogen, and R ⁶ is C _1-6 alkyl optionally substituted with one or more substituents independently selected from C _3-10 carbocycle and 3- to 10-membered heterocycle. In some embodiments, R ⁵ is hydrogen, and R ⁶ is methyl. [0139] In some embodiments, the compound or salt of Formula (I) is a compound or salt of Formula (I-Q): In some embodiments, the compound or salt of formula (I-Q is an activator of skeletal myosin. In some embodiments, the compound or salt of formula (I-Q) is used to treat obesity or to induce weight loss. In some embodiments, for a compound or salt of formula (I-Q), R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-10 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3- 10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10- membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is selected from: C _1-10 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3- 10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10- membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is selected from: C _1-10 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3- 10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10- membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is - H, and R ⁶ is selected from: C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is a branched (e.g., nonlinear, e.g., primary, secondary, or tertiary) C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , - NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is a methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, i-butyl, t- butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, or 2- methylbutyl moiety optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is a methyl, ethyl, n-propyl, i- propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3- pentyl, sec-isopentyl, or 2-methylbutyl moiety optionally substituted with one or more substituents independently selected from C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from halogen and - CN. In some embodiments, R ⁵ is -H, and R ⁶ is a methyl, ethyl, n-propyl, i-propyl, n-butyl, s- butyl, i-butyl, t-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec- isopentyl, or 2-methylbutyl moiety optionally substituted with one or more substituents independently selected from C _3-10 carbocycle. In some embodiments, R ⁵ is -H, and R ⁶ is a n- propyl, i-propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec- pentyl, 3-pentyl, sec-isopentyl, or 2-methylbutyl moiety. [0140] In certain embodiments, for a compound or salt of Formula (I), R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁷ is selected from hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, R ⁷ is selected from hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen and CN. In some embodiments, R ⁷ is selected from hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen. In some embodiments, R ⁷ is selected from hydrogen and C _1-6 alkyl. In some embodiments, R ⁷ is selected from hydrogen and methyl. In some embodiments, R ⁷ is selected from hydrogen. [0141] In certain embodiments, for a compound or salt of Formula (I), R ⁸ is selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , and -CN. [0142] In some embodiments, R ⁸ is selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , - N(R ^10e ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁸ is selected from hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, R ⁸ is selected from hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen and CN. In some embodiments, R ⁸ is selected from hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen. In some embodiments, R ⁸ is selected from hydrogen and C _1-6 alkyl. In some embodiments, R ⁸ is selected from hydrogen. [0143] In certain embodiments, for a compound or salt of Formula (I), each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN. [0144] In some embodiments, each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, and -CN. In some embodiments, each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, and -CN; and C _1-3 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, and -CN. In some embodiments, each R ^9a is independently selected from: F, Cl, Br, -OR ^10a , -N(R ^10a ) ₂ , -NO ₂ , =O, and -CN; and C _1-3 alkyl optionally substituted with one or more substituents independently selected from F, Cl, Br, -OR ^10a , -N(R ^10a ) ₂ , -NO ₂ , =O, and -CN. In some embodiments, each R ^9a is independently selected from: F, Cl, -OR ^10a , -N(R ^10a ) ₂ , -NO ₂ , =O, and -CN; and C _1-3 alkyl optionally substituted with one or more substituents independently selected from F, Cl, -OR ^10a , -N(R ^10a ) ₂ , -NO ₂ , =O, and -CN. In some embodiments, each R ^9a is independently selected from: F, Cl, -NO ₂ , =O, and - CN; and C _1-3 alkyl optionally substituted with one or more substituents independently selected from F, Cl, -NO ₂ , =O, and -CN. In some embodiments, each R ^9a is independently selected from: F, Cl, and -CN; and C _1-3 alkyl optionally substituted with one or more substituents independently selected from F, Cl, and -CN. In some embodiments, each R ^9a is independently selected from: F, Cl, and -CN; and C _1-3 alkyl. In some embodiments, each R ^9a is independently selected from: F and -CN; and C _1-3 alkyl. In some embodiments, each R ^9a is independently selected from: F and - CN. In some embodiments, each R ^9a is independently selected from: F. In some embodiments, each R ^9a is independently selected from: -CN. [0145] In certain embodiments, for a compound or salt of Formula (I), each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , - S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , - S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN. In some embodiments, each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, and -CN. In some embodiments, each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, and -CN. In some embodiments, each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -NO ₂ , =O, and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -NO ₂ , =O, and -CN. In some embodiments, each R ^9b is independently selected from halogen and -CN. In some embodiments, each R ^9b is independently selected from -F, -Cl, and - CN. In some embodiments, each R ^9b is independently selected from -F and -CN. In some embodiments, each R ^9b is independently selected from -F. In some embodiments, each R ^9b is independently selected from -CN. [0146] In certain embodiments, for a compound or salt of Formula (I), each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c _, - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c , - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN. In some embodiments, each R ^9c is independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from halogen, -OR ^10c , - SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , - NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from F, Cl, Br, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from F, Cl, Br, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from F, Cl, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from F, Cl, -OR ^10c , - SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from F, Cl, Br, -OR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN; and C _{1- 3} alkyl, optionally substituted with one or more substituents independently selected from F, Cl, Br, -OR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from F, Cl, Br, -NO ₂ , =O, and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from F, Cl, Br, -NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from F, Cl, -NO ₂ , =O, and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from F, Cl, - NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from: F, Cl, and - CN; and C _1-3 alkyl optionally substituted with one or more substituents independently selected from F, Cl, and -CN. In some embodiments, each R ^9c is independently selected from: F, Cl, and - CN; and C _1-3 alkyl. In some embodiments, each R ^9c is independently selected from: F and -CN; and C _1-3 alkyl. In some embodiments, each R ^9c is independently selected from: F and -CN. In some embodiments, each R ^9c is independently selected from: F. In some embodiments, each R ^9c is independently selected from: -CN. [0147] In certain embodiments, for a compound or salt of Formula (I), each R ^10a , R ^10b , R ^10c , R ^10d , and R ^10e is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0148] In certain embodiments, for a compound or salt of Formula (I), each R ^10a is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10- membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10a is independently selected from hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , and -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, and C _1-6 haloalkyl. In some embodiments, each R ^10a is independently selected from hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , and =O; and C _3-10 carbocycle, and 3- to 10- membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, and C _1-6 haloalkyl. In some embodiments, R ^10a is independently selected from hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen; and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, R ^10a is independently selected from hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from fluorine and chlorine; and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, R ^10a is independently selected from hydrogen; and C _1-6 alkyl optionally substituted with fluorine; and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, R ^10a is independently selected from hydrogen; and C _1-6 alkyl optionally substituted with fluorine; and C _3-10 carbocycle, and 3- to 10-membered heterocycle selected from cyclopropane and oxetane. In some embodiments, R ^10a is hydrogen. In some embodiments, R ^10a is methyl. [0149] In certain embodiments, for a compound or salt of Formula (I), each R ^10b is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0150] In some embodiments, each R ^10b is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , and -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, and C _1-6 haloalkyl. In some embodiments, each R ^10b is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10b is hydrogen. In some embodiments, R ^10b is methyl. [0151] In certain embodiments, for a compound or salt of Formula (I), each R ^10c is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0152] In some embodiments, each R ^10c is independently selected from: hydrogen; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _{3- 10} carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10c is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10c is hydrogen. In some embodiments, R ^10c is methyl. [0153] In certain embodiments, for a compound or salt of Formula (I), each R ^10d is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0154] In some embodiments, each R ^10d is independently selected from: hydrogen; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _{3- 10} carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10d is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10d is hydrogen. In some embodiments, R ^10d is methyl. [0155] In certain embodiments, for a compound or salt of Formula (I), each R ^10e is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0156] In some embodiments, each R ^10e is independently selected from: hydrogen; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _{3- 10} carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10e is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10e is hydrogen. In some embodiments, R ^10e is methyl. [0157] In certain embodiments, for a compound or salt of Formula (I), if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , -N(R ¹⁰ ) ₂ , -NO ₂ , and -CN. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , and -CN. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from fluoro, -OH, and -CN. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁸ is selected from hydrogen and C _1-4 alkyl. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁸ is selected from hydrogen and C ₁ alkyl. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁸ is selected from hydrogen. [0158] In certain embodiments, for a compound or salt of Formula (I), if X ³ and X ¹ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , -N(R ¹⁰ ) ₂ , -NO ₂ , and -CN. In some embodiments, if X ³ and X ¹ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , and -CN. In some embodiments, if X ³ and X ¹ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from fluoro, -OH, and -CN. In some embodiments, if X ³ and X ¹ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl. In some embodiments, if X ³ and X ¹ are both N, then R ⁸ is selected from hydrogen and C ₁ alkyl. In some embodiments, if X ³ and X ¹ are both N, then R ⁸ is selected from hydrogen. [0159] In certain embodiments, for a compound or salt of Formula (I), if X ² and X ⁴ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , -N(R ¹⁰ ) ₂ , -NO ₂ , and -CN. In some embodiments, if X ² and X ⁴ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , and -CN. In some embodiments, if X ² and X ⁴ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from fluoro, -OH, and -CN. In some embodiments, if X ² and X ⁴ are both N, then R ⁸ is selected from hydrogen and C _1-4 alkyl. In some embodiments, if X ² and X ⁴ are both N, then R ⁸ is selected from hydrogen and C ₁ alkyl. In some embodiments, if X ² and X ⁴ are both N, then R ⁸ is selected from hydrogen. [0160] In certain embodiments, for a compound or salt of Formula (I), if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , -N(R ¹⁰ ) ₂ , -NO ₂ , and -CN. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , and -CN. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from fluoro, -OH, and -CN. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁷ is selected from hydrogen and C _1-4 alkyl. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁷ is selected from hydrogen and C ₁ alkyl. In some embodiments, if two of X ¹ , X ² , X ³ , and X ⁴ are N, then R ⁷ is selected from hydrogen. [0161] In certain embodiments, for a compound or salt of Formula (I), if X ³ and X ¹ are both N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , -N(R ¹⁰ ) ₂ , -NO ₂ , and -CN. In some embodiments, if X ³ and X ¹ are both N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , and -CN. In some embodiments, if X ³ and X ¹ are both N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from fluoro, -OH, and -CN. In some embodiments, if X ³ and X ¹ are both N, then R ⁷ is selected from hydrogen and C _1-4 alkyl. In some embodiments, if X ³ and X ¹ are both N, then R ⁷ is selected from hydrogen and C ₁ alkyl. In some embodiments, if X ³ and X ¹ are both N, then R ⁷ is selected from hydrogen. [0162] In certain embodiments, for a compound or salt of Formula (I), if X ² and X ⁴ are both N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , -SR ¹⁰ , -N(R ¹⁰ ) ₂ , -NO ₂ , and -CN. In some embodiments, if X ² and X ⁴ are both N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ¹⁰ , and -CN. In some embodiments, if X ² and X ⁴ are both N, then R ⁷ is selected from hydrogen and C _1-4 alkyl optionally substituted with one or more substituents independently selected from fluoro, -OH, and -CN. In some embodiments, if X ² and X ⁴ are both N, then R ⁷ is selected from hydrogen and C _1-4 alkyl. In some embodiments, if X ² and X ⁴ are both N, then R ⁷ is selected from hydrogen and C ₁ alkyl. In some embodiments, if X ² and X ⁴ are both N, then R ⁷ is selected from hydrogen. [0163] In some embodiments, the compound or salt of Formula (I) is selected from: N87, N4, N5, N13, N15, N123, N33, N111, N124, and N128. [0164] In some embodiments, the compound or salt of Formula (I) is selected from: N87, N4, N5, N13, N15, N123, N33, N111, N124, N128, N7, N18, N68, N88, N26, N103, N104, N117, N110, N37, N102, N94, N112, N81, N54, N101, N23, N136, N9, N98, N122, N31, N28, N115, N121, N74, N119, N16, N126, N47, N125, N83, N118, N10, and N62. [0165] In some embodiments, the compound or salt of Formula (I) is selected from: N87, N4, N5, N13, N15, N123, N33, N111, N124, N128, N7, N18, N68, N88, N26, N103, N104, N117, N110, N37, N102, N94, N112, N81, N54, N101, N23, N136, N9, N98, N122, N31, N28, N115, N121, N74, N119, N16, N126, N47, N125, N83, N118, N10, N62, N41, N60, N14, N44, N108, N130, N93, N19, N77, N8, N114, N106, N3, N133, N6, N24, N127, N72, N84, N95, N132, N129, N21, N116, N55, N109, N35, N135, N59, N12, N36, N80, N99, N34, N39, and N50. [0166] In some embodiments, the compound or salt of Formula (I) is selected from: N87, N4, N5, N13, N15, N123, N33, N111, N124, N128, N7, N18, N68, N88, N26, N103, N104, N117, N110, N37, N102, N94, N112, N81, N54, N101, N23, N136, N9, N98, N122, N31, N28, N115, N121, N74, N119, N16, N126, N47, N125, N83, N118, N10, N62, N41, N60, N14, N44, N108, N130, N93, N19, N77, N8, N114, N106, N3, N133, N6, N24, N127, N72, N84, N95, N132, N129, N21, N116, N55, N109, N35, N135, N59, N12, N36, N80, N99, N34, N39, N50, N57, N25, N45, N2, N85, N113, N64, N78, N66, N86, N43, N30, N131, N71, N91, N38, N1, N17, N40, and N52. [0167] In some embodiments, the compound or salt of Formula (I) is selected from: N87, N4, N5, N13, N15, N123, N33, N111, N124, N128, N7, N18, N68, N88, N26, N103, N104, N117, N110, N37, N102, N94, N112, N81, N54, N101, N23, N136, N9, N98, N122, N31, N28, N115, N121, N74, N119, N16, N126, N47, N125, N83, N118, N10, N62, N41, N60, N14, N44, N108, N130, N93, N19, N77, N8, N114, N106, N3, N133, N6, N24, N127, N72, N84, N95, N132, N129, N21, N116, N55, N109, N35, N135, N59, N12, N36, N80, N99, N34, N39, N50, N57, N25, N45, N2, N85, N113, N64, N78, N66, N86, N43, N30, N131, N71, N91, N38, N1, N17, N40, N52, N11, N20, N22, N27, N29, N32, N42, N46, N48, N49, N51, N53, N56, N58, N61, N63, N65, N67, N69, N70, N73, N75, N76, N79, N82, N89, N90, N92, N96, N97, N100, N105, N107, and N120. [0168] In some embodiments, the compound or salt of Formula (I) is selected from: N5, N23, N87, N124, N128, N7, N33, N117, N4, and N94 [0169] In some embodiments, the compound or salt of Formula (I) is selected from: N5, N23, N87, N124, N128, N7, N33, N117, N4, N94, N81, N88, N115, N13, and N123. [0170] In some embodiments, the compound or salt of Formula (I) is selected from: N5, N23, N87, N124, N128, N7, N33, N117, N4, N94, N81, N88, N115, N13, N123, N31, N26, N18, N74, N68, N101, N102, N41, N125, N15, N54, N9, N119, N126, N104, N37, N129, N62, N118, N95, N121, N47, N28, N111, N114, N112, and N103. [0171] In some embodiments, the compound or salt of Formula (I) is selected from: N5, N23, N87, N124, N128, N7, N33, N117, N4, N94, N81, N88, N115, N13, N123, N31, N26, N18, N74, N68, N101, N102, N41, N125, N15, N54, N9, N119, N126, N104, N37, N129, N62, N118, N95, N121, N47, N28, N111, N114, N112, N103, N136, N122, N19, N8, N10, N21, N133, N44, N110, N77, N36, N120, N78, N2, N24, N6, N72, N116, N108, N39, N98, N127, N113, N60, and N132. [0172] In some embodiments, the compound or salt of Formula (I) is selected from: N5, N23, N87, N124, N128, N7, N33, N117, N4, N94, N81, N88, N115, N13, N123, N31, N26, N18, N74, N68, N101, N102, N41, N125, N15, N54, N9, N119, N126, N104, N37, N129, N62, N118, N95, N121, N47, N28, N111, N114, N112, N103, N136, N122, N19, N8, N10, N21, N133, N44, N110, N77, N36, N120, N78, N2, N24, N6, N72, N116, N108, N39, N98, N127, N113, N60, N132, N1, N3, N11, N12, N14, N16, N17, N20, N22, N25, N27, N29, N30, N32, N34, N35, N38, N40, N42, N43, N45, N46, N48, N49, N50, N51, N52, N53, N55, N56, N57, N58, N59, N61, N63, N64, N65, N66, N67, N69, N70, N71, N73, N75, N76, N79, N80, N82, N83, N84, N85, N86, N89, N90, N91, N92, N93, N96, N97, N99, N100, N105, N106, N107, N109, N130, N131, and N135. [0173] In some embodiments, for a compound or salt of formula (I), each R ¹ is independently selected from: hydrogen; deuterium, -N ₃ , halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , - C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , - OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), - CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a . In some embodiments, R ² is selected from C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , -OC(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , - OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b . In some embodiments, R ³ and R ⁴ are each independently selected from: .hydrogen, deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or .R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen, deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or.R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . In some embodiments, R ⁷ is selected from:.hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁸ is selected from:.hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10e , -SR ^10e , - N(R ^10e ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , - NO ₂ , and -CN. In some embodiments, each R ^9a is independently selected from: deuterium, -N ₃ , halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN. In some embodiments, each R ^9b is independently selected from: deuterium, -N ₃ , halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN. In some embodiments, each R ^9c is independently selected from: deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c , - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c , - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN. In some embodiments, each R ^10a , R ^10b , R ^10c , R ^10d , and R ^10e is independently selected from: .hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. In some embodiments, R ³ is -D. In some embodiments, R ⁴ is -D. In some embodiments, R ⁵ is -D. In some embodiments, R ⁶ is -D. In some embodiments, R ⁷ is -D. In some embodiments, R ⁸ is -D. [0174] In one aspect, the present disclosure provides a compound represented by Formula (II): or a salt thereof, wherein: n is 0, 1, 2, 3, or 4; each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -C(O)OR ^10a , - OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , - S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a ; R ² is selected from: halogen, -NO ₂ , -CN, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , and -S(O) ₂ R ^10b ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , - S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ ; R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c ; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9d ; R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , and -CN; R ⁸ is selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10f , -SR ^10f , -N(R ^10f ) ₂ , -NO ₂ , and -CN; R ¹¹ is selected from: halogen, -NO ₂ , -CN, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , and -S(O) ₂ R ^10g ; and C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g _, -C(O)OR ^10g , - OC(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -S(O)R ^10g , - S(O) ₂ R ^10g , -NO ₂ , =S, =N(R ^10g ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g ; R ¹² is selected from hydrogen; C _1-6 alkyl optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; and C _3-6 carbocycle and 3- to 10-membered heterocycle each optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; or R ¹² , R ¹¹ , and R ² come together to form a C ₅ -C ₁₀ bridged ring system; each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , - OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; each R ^9b’ is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)R ^10c _, -N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , - N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c _, - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , - OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; each R ^9d is independently selected from: halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -C(O)N(R ^10d ) ₂ , - N(R ^10d )C(O)R ^10d , -N(R ^10d )C(O)N(R ^10d ) ₂ , -OC(O)N(R ^10d ) ₂ , - N(R ^10d )C(O)OR ^10d , -C(O)OR ^10d , -OC(O)R ^10d , -S(O)R ^10d , -S(O) ₂ R ^10d , -NO ₂ , =O, =S, =N(R ^10d ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -C(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)R ^10d _, - N(R ^10d )C(O)N(R ^10d ) ₂ , -OC(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)OR ^10d , -C(O)OR ^10d , - OC(O)R ^10d , -S(O)R ^10d , -S(O) ₂ R ^10d , -NO ₂ , =O, =S, =N(R ^10d ), and -CN; each R ^9g is independently selected from: halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g _, - N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , - OC(O)R ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), and -CN; each R ^10a , R ^10b , R ^10c , R ^10d , R ^10e , R ^10f , R ^10g , R ^10h is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0175] In some embodiments, the compound of Formula (II) is of Formula (II-X): or a salt thereof, wherein: n is 1, 2, 3, or 4; each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a ; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , =O, -CN, and C _1-6 alkyl, wherein each C _1-6 alkyl is optionally substituted with one or more R ^9a ; R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , - SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein each C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, and 3- to 10-membered heterocycle is optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ ; R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; or; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; R ⁸ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; R ¹¹ is selected from: halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; R ¹² is selected from hydrogen; C _1-6 alkyl optionally substituted with one or more substituents independently selected from the group consisting of halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; and C _3-6 carbocycle and 3- to 10-membered heterocycle each optionally substituted with one or more substituents independently selected from the group consisting of halogen, -OH, -OMe -SH, -NH ₂ , -NO ₂ , and -CN; or R ¹² , R ¹¹ , and R ² come together to form a C ₅ -C ₁₀ bridged ring system; each R ^9a is independently selected from halogen, -OR ^10a , -CN, and C _1-6 alkyl; each R ^9b is independently selected from halogen, -OR ^10b , -CN, and C _1-6 alkyl; each R ^9b’ is independently selected from halogen, -OR ^10b , -CN, and C _1-6 alkyl; each R ^10a , R ^10b , is independently selected from hydrogen, C _1-6 alkyl, C _3-10 carbocycle, and 3- to 10-membered heterocycle. [0176] In some embodiments, the compound of Formula II is of Formula (II-Y) Formula (II-Y): or a salt thereof, wherein: n is 1 or 2; each R ¹ is independently selected from: halogen, -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ ; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , =O, and -CN; R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , =O, -CN, C _1-6 alkyl, C _2-6 alkynyl, C _3-10 carbocycle and 3- to 10- membered heterocycle, wherein each C _1-6 alkyl, C _2-6 alkynyl, C _3-10 carbocycle, and 3- to 10-membered heterocycle is optionally substituted with one or more R ^9b ; R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OH, -OMe - and -CN; and C _1-3 alkyl optionally substituted with one or more substituents independently selected from halogen, OH, -OMe and -CN; R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OH, -OMe - and -CN; and C _1-3 alkyl optionally substituted with one or more substituents independently selected from halogen, -OH, -OMe and -CN; R ⁷ is selected from: hydrogen and C _1-3 alkyl optionally substituted with one or more substituents independently selected from halogen, -OH, -OMe and -CN; R ⁸ is selected from: hydrogen and C _1-3 alkyl optionally substituted with one or more substituents independently selected from halogen, -OH, -OMe and -CN; R ¹¹ is selected from: C _1-3 alkyl optionally substituted with one or more substituents independently selected from halogen, -OH, -OMe and -CN; R ¹² is selected from hydrogen, C _1-3 alkyl, C _3-6 carbocycle and 3- to 10-membered; or R ¹² , R ¹¹ , and R ² come together to form a C ₅ -C ₁₀ bridged ring system; each R ^9a is independently selected from halogen, -OH, -OMe, -CN, and C _1-3 alkyl; each R ^9b is independently selected from halogen, -OH, -OMe, -CN, and C _1-3 alkyl; each R ^9b’ is independently selected from halogen, -OH, -OMe, -CN, and C _1-3 alkyl; each R ^10a , R ^10b , is independently selected from hydrogen, C _1-6 alkyl, C _6-10 carbocycle, and 5- to 10-membered heterocycle. [0177] In some embodiments, for a compound or salt of Formula (II), n is 0, 1, 2, 3, or 4. In some embodiments, n is 0, 1, 2, or 3. In some embodiments, n is 0, 1, 2, or 4. In some embodiments, n is 0, 1, 3, or 4. In some embodiments, n is 0, 2, 3, or 4. In some embodiments, n is 1, 2, 3, or 4. In some embodiments, n is 0, 1, or 2. In some embodiments, n is 0, 1, or 3. In some embodiments, n is 0, 1, or 4. In some embodiments, n is 0, 2, or 3. In some embodiments, n is 0, 2, or 4. In some embodiments, n is 0, 3, or 4. In some embodiments, n is 1, 2, or 3. In some embodiments, n is 1, 2, or 4. In some embodiments, n is 0 or 1. In some embodiments, n is 0 or 2. In some embodiments, n is 0 or 3. In some embodiments, n is 0 or 4. In some embodiments, n is 1 or 2. In some embodiments, n is 1 or 3. In some embodiments, n is 1 or 4. In some embodiments, n is 2 or 3. In some embodiments, n is 2 or 4. In some embodiments, n is 3 or 4. In some embodiments, n is 0. In some embodiments, n is 1. In some embodiments, n is 2. In some embodiments, n is 3. In some embodiments, n is 4. In some embodiments, n is 0. In some embodiments, n is 1 or 2. In some embodiments, n is 1. In some embodiments, n is 2. In some embodiments, n is 0 or 1. In some embodiments, n is 0 or 2. [0178] In some embodiments, for a compound or salt of Formula (II), each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -C(O)OR ^10a , -OC(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , - SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , - OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , - NO ₂ , =O, =S, =N(R ^10a ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a ; [0179] In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , and - OC(O)R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -C(O)OR ^10a , -OC(O)R ^10a , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , - C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -NO ₂ , =O, -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl, and C _2-6 alkenyl, are each optionally substituted with one or more R ^9a . [0180] In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -C(O)OR ^10a , and - OC(O)R ^10a ; C _1-6 alkyl and C _2-6 alkenyl each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , - C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10- membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -NO ₂ , =O, -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl, and C _2-6 alkenyl, are each optionally substituted with one or more R ^9a . In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , and -C(O)R ^10a ; C _1-6 alkyl and C _2-6 alkenyl each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl, and C _2-6 alkenyl, are each optionally substituted with one or more R ^9a . In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , and -C(O)R ^10a ; C _1-6 alkyl and C _2-6 alkenyl each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle. In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , and -C(O)R ^10a ; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9a . In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , and -C(O)R ^10a ; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9a . In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , and -C(O)R ^10a ; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, and -CN. In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , - SR ^10a , -N(R ^10a ) ₂ , and -C(O)R ^10a ; and C _1-6 alkyl. In some embodiments, each R ¹ is independently selected from: halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , and -N(R ^10a ) ₂ . In some embodiments, each R ¹ is independently selected from: halogen and -CN. In some embodiments, each R ¹ is independently selected from: fluoro, bromo, and -CN. In some embodiments, each R ¹ is independently selected from fluoro and CN. In some embodiments, each R ¹ is independently selected from fluoro and bromo. In some embodiments, each R ¹ is independently selected from bromo and CN. some embodiments, each R ¹ is independently selected from fluoro. In some embodiments, each R ¹ is independently selected from bromo. In some embodiments, each R ¹ is independently selected from CN. In some embodiments, each R ¹ is independently selected from: halogen, -CN, -OR ^10a , and C _1-6 alkyl. In some embodiments, each R ¹ is independently selected from: halogen, -CN, -OR ^10a , and C _1-6 alkyl. In some embodiments, each R ¹ is independently selected from: -F, -Br, -Cl, -CN, -OH, and -CH ₃ . In some embodiments, each R ¹ is independently selected from: -F, -Br, -CN, -OH, and -CH ₃ . [0181] In some embodiments, n is 2, and each R ¹ is independently selected from -F, -Cl, and - CN. In some embodiments, n is 2, and each R ¹ is independently selected from -F, and -CN. In some embodiments, n is 2, and each R ¹ is independently selected from -F. In some embodiments, an R ¹ ortho to the carbon bearing R ³ and R ⁴ is -F. In some embodiments, an R ¹ meta to the carbon bearing R ³ and R ⁴ is -F. In some embodiments, an R ¹ para to the carbon bearing R ³ and R ⁴ is -F. In some embodiments, an R ¹ ortho to the carbon bearing R ³ and R ⁴ is -F, and an R ¹ meta to the carbon bearing R ³ and R ⁴ is -F. In some embodiments, n is 2, and an R ¹ ortho to the carbon bearing R ³ and R ⁴ is -F, and an R ¹ meta to the carbon bearing R ³ and R ⁴ is -F. [0182] In some embodiments, the compound of formula (II) is selected from Formula (II-A), [0183] In some embodiments, the compound of formula (II) is selected from Formula (II-B) wherein each Y is selected from - (CR ^9b )-and N. [0184] In some embodiments, the compound of formula (II) is selected from Formula (II-C), [0185] In some embodiments, the compound of formula (II) is selected from Formula (II-D) wherein each Y is selected from -(CR ^9b )- and N. [0186] In some embodiments, the compound of formula (II) is selected from Formula (II-E), [0187] In some embodiments, the compound of formula (II) is selected from Formula (II-F) wherein each Y is selected from - (CR ^9b )-and N. [0188] In some embodiments, for a compound or salt of Formula (II), R ² is selected from: halogen, -NO ₂ , -CN, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , and -S(O) ₂ R ^10b ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , - S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . [0189] In some embodiments, R ² together with R ¹¹ and R ¹² form a bridged 5- to 20-membered heterocycle or bridged C _5-20 carbocycle optionally substituted with one or more R ^9b’ . In some embodiments, R ² together with R ¹¹ and R ¹² form a bridged 5- to 18-membered heterocycle or bridged C _5-18 carbocycle optionally substituted with one or more R ^9b’ . In some embodiments, R ² together with R ¹¹ and R ¹² form a bridged 5- to 15-membered heterocycle or bridged C _5-15 carbocycle optionally substituted with one or more R ^9b’ . In some embodiments, R ² together with R ¹¹ and R ¹² form a bridged 5- to 12-membered heterocycle or bridged C _5-12 carbocycle optionally substituted with one or more R ^9b’ . In some embodiments, R ² together with R ¹¹ and R ¹² form a bridged 5- to 10-membered heterocycle or bridged C _5-10 carbocycle optionally substituted with one or more R ^9b’ . [0190] In some embodiments, R ² is selected from: halogen, -NO ₂ , -CN, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , and -OC(O)R ^10b ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , - C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10- membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . [0191] In some embodiments, for a compound or salt of Formula (II), R ² is selected from: halogen, -NO ₂ , -CN, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , and -OC(O)R ^10b ; C _1-6 alkyl and C _2-6 alkenyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -C(O)OR ^10b , -OC(O)R ^10b , -NO ₂ , =O, - CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl and C _2-6 alkenyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, R ² is selected from: halogen, -NO ₂ , - CN, -OR ^10b , -SR ^10b , and -N(R ^10b ) ₂ ; C _1-6 alkyl and C _2-6 alkenyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl and C _2-6 alkenyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, R ² is selected from: halogen, -NO ₂ , -CN, -OR ^10b , -SR ^10b , and -N(R ^10b ) ₂ ; C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN; and C _3-10 carbocycle and 3- to 10- membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl and C _2-6 alkenyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, R ² is selected from: halogen, -NO ₂ , - CN, -OR ^10b , -SR ^10b , and -N(R ^10b ) ₂ ; C _1-6 alkyl, optionally substituted with one or more -OR ^10b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl and C _2-6 alkenyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . [0192] In some embodiments, R ² is selected from: halogen, -NO ₂ , -CN, -OR ^10b , -SR ^10b , and - N(R ^10b ) ₂ ; C _1-6 alkyl; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl and C _2-6 alkenyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl and C _2-6 alkenyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . [0193] In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -CN, C _1-6 alkyl, and C _2-6 alkenyl, wherein C _1-6 alkyl and C _2-6 alkenyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -CN, and C _1-6 alkyl, wherein C _1-6 alkyl is optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from fluoro, bromo, -OR ^10b , -CN, and C _1-6 alkyl, wherein C _1-6 alkyl is optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from fluoro, bromo, -OMe, -CN, and C _1-6 alkyl, wherein C _1-6 alkyl is optionally substituted with one or more R ^9b . In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from fluoro, bromo, -OMe, -CN, and C _1-6 alkyl, wherein C _1-6 alkyl is optionally substituted with one or more fluoro. In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from fluoro, bromo, -OMe, - CN, and C ₁ alkyl, wherein C ₁ alkyl is optionally substituted with one or more fluoro. [0194] In some embodiments, R ² is selected from pyrazinyl (e.g., 2-pyrazinyl, 3-pyrazinyl), pyridazinyl (e.g., 3-, 4-, 5-, or 6- pyridazine), phenyl, pyridyl (e.g., 2-, 3-, or 4- pyridyl), and pyrimidyl (e.g., 2-, 4-, 5- or 6- pyrimidyl), wherein each pyrazinyl, pyridizyl, phenyl, pyridyl, and pyrimidyl is optionally substituted with one or more substituents independently selected from fluoro, bromo, -OMe, -CN, and C ₁ alkyl, wherein each C ₁ alkyl is optionally substituted with one or more fluoro. In some embodiments, R ² is selected from phenyl, pyridyl, and pyrimidyl, wherein each phenyl, pyridyl, and pyrimidyl is optionally substituted with one or more substituents independently selected from fluoro, bromo, -OMe, -CN, and C ₁ alkyl, wherein each C ₁ alkyl is optionally substituted with one or more fluoro. In some embodiments, R ² is selected from phenyl, 2-pyridyl, 2-pyrimidyl, and 6-pyrimidyl, wherein each phenyl, 2-pyridyl, 2-pyrimidyl, and 6-pyrimidyl is optionally substituted with one or more substituents independently selected from fluoro, bromo, -OMe, -CN, and C ₁ alkyl, wherein each C ₁ alkyl is optionally substituted with one or more fluoro. In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , =O, -CN, C _1-6 alkyl, C _2-6 alkynyl, C _3-10 carbocycle and 3- to 10-membered heterocycle. In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from -F, -Cl, -Br, -CN, -OH, - OCH ₃ , -CH ₃ , -CF ₃ , -C(O)NH ₂ , and -CCH. [0195] In some embodiments, R ² is selected from [0196] In some embodiments, R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _{3- 10} carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, wherein R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, and wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more fluoro or CN. In some embodiments, wherein R ² together with R ¹¹ form a C _3-10 carbocycle or 3- to 10-membered heterocycle selected from dihydrobenzofuran and indene, each of which is optionally substituted with one or more substituents independently selected from fluoro and CN. [0197] In some embodiments, R ² together with R ¹¹ is selected from , In some embodiments, R ¹² is H and R ² together with R ¹¹ is selected from ^{12 2} , In some embodiments, R is H and R together with R ¹¹ is selected from [0198] In some embodiments, R ² and R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . In some embodiments, R ² and R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more substituents selected from halogen and CN. In some embodiments, R ² and R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more substituents selected from fluorine and CN. In some embodiments, R ² and R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more substituents selected from halogen. In some embodiments, R ² and R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more substituents selected from fluorine. In some embodiments, R ² and R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more substituents selected from CN. [0199] In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from fluoro, bromo, -OMe, -CN, and C ₁ alkyl, wherein C ₁ alkyl is optionally substituted with one or more fluoro. In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from fluoro, bromo, -CN, and C ₁ alkyl. In some embodiments, R ² is selected from: C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from fluoro, bromo, -CN, and C ₁ alkyl. [0200] In some embodiments, R ² is a C _3-10 carbocycle optionally substituted with one or more substituents independently selected from fluoro, bromo, -CN, and C ₁ alkyl. In some embodiments, R ² is a C _3-10 carbocycle optionally substituted with one or more substituents independently selected from fluoro, -CN, and C ₁ alkyl. In some embodiments, R ² is a C _3-10 carbocycle optionally substituted with one or more substituents independently selected from fluoro and -CN. In some embodiments, R ² is a C _3-10 carbocycle optionally substituted with one or more substituents independently selected from fluoro. In some embodiments, R ² is a C _3-10 carbocycle optionally substituted with one or more substituents independently selected from chloro. [0201] In some embodiments, for a compound or salt of Formula (II), R ³ and R ⁴ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . [0202] In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen. [0203] In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C ₁ alkyl optionally substituted with one or more substituents independently selected from fluoro. [0204] In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen; and C ₁ alkyl. In some embodiments, R ³ and R ⁴ are each independently selected from: hydrogen. In some embodiments, R ³ is selected from: hydrogen. In some embodiments, R ⁴ is selected from: hydrogen. In some embodiments, R ³ is -H, and R ⁴ is -OH. In some embodiments, R ³ is -OH, and R ⁴ is -H. In some embodiments, R ³ is -OH. [0205] In some embodiments, R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _{3- 10} carbocycle, the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . In some embodiments, R ³ together with R ⁴ form a C _3-10 carbocycle, the C _3- 10 carbocycle is optionally substituted with one or more R ^9c . In some embodiments, R ³ together with R ⁴ form a C _3-10 carbocycle. In some embodiments, R ³ together with R ⁴ form a C _3-10 carbocycle selected from cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl. In some embodiments, R ³ together with R ⁴ form a ring selected from . [0206] In some embodiments, for a compound or salt of Formula (II), R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9d . [0207] In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9d . In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle. In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl. In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ and R ⁶ are hydrogen. In some embodiments, R ⁵ is hydrogen. In some embodiments, R ⁶ is hydrogen. In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9d . The compound or salt of any one of claims 92 to 137 or claim 141, wherein R ⁵ and R ⁶ are each independently selected from: hydrogen; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle. In some embodiments, R ⁵ and R ⁶ are each independently selected from: hydrogen and -CH ₃ , or R ⁵ and R ⁶ together form a cyclopropyl. [0208] In some embodiments, the compound or salt of Formula (II) is a compound or salt of Formula (II-Q): In some embodiments, the compound or salt of formula (II-Q is an activator of skeletal myosin. In some embodiments, the compound or salt of formula (II-Q) is used to treat obesity or to induce weight loss. In some embodiments, for a compound or salt of formula (I-Q), R ⁵ and R ⁶ are each independently selected from: hydrogen, halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; C _1-10 alkyl, optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is selected from: C _1-10 alkyl, optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is selected from: C _1-10 alkyl, optionally substituted with one or more substituents independently selected from halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is selected from: C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is a branched (e.g., nonlinear, e.g., primary, secondary, or tertiary) C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10-membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is a methyl, ethyl, n-propyl, i- propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3- pentyl, sec-isopentyl, or 2-methylbutyl moiety optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , -CN, C _3-10 carbocycle, and 3- to 10-membered heterocycle, wherein each C _3-10 carbocycle and 3- to 10- membered heterocycle are optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁵ is - H, and R ⁶ is a methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, tert- pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, or 2-methylbutyl moiety optionally substituted with one or more substituents independently selected from C _3-10 carbocycle, wherein each C _3-10 carbocycle is optionally substituted with one or more substituents independently selected from halogen and -CN. In some embodiments, R ⁵ is -H, and R ⁶ is a methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, or 2-methylbutyl moiety optionally substituted with one or more substituents independently selected from C _3-10 carbocycle. In some embodiments, R ⁵ is -H, and R ⁶ is a n-propyl, i-propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, or 2-methylbutyl moiety. [0209] In some embodiments, for a compound or salt of Formula (II), R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁷ is selected from: hydrogen, and C _1-3 alkyl. In some embodiments, R ⁷ is selected from: hydrogen. [0210] In some embodiments, for a compound or salt of formula (II), R ⁸ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10f , -SR ^10f , -N(R ^10f ) ₂ , -NO ₂ , and -CN. In some embodiments, R ⁸ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, and -CN. In some embodiments, R ⁸ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from fluoro and -CN. In some embodiments, R ⁸ is selected from: hydrogen and C _1-3 alkyl. In some embodiments, for a compound or salt of Formula (II), R ⁸ is selected from: hydrogen and C ₁ alkyl. In some embodiments, R ⁸ is selected from: hydrogen. [0211] In some embodiments, for a compound or salt of Formula (II), R ¹¹ is selected from: halogen, -NO ₂ , -CN, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , and -S(O) ₂ R ^10g ; and C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g _, -C(O)OR ^10g , - OC(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -S(O)R ^10g , - S(O) ₂ R ^10g , -NO ₂ , =S, =N(R ^10g ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g . [0212] In some embodiments, R ¹¹ is selected from: halogen, -NO ₂ , -CN, -OR ^10g , -SR ^10g , - N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g , -C(O)OR ^10g , and -OC(O)R ^10g ; and C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , - C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -NO ₂ , =O, -CN, and C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g . In some embodiments, R ¹¹ is selected from: halogen, -NO ₂ , -CN, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)R ^10g _, -C(O)OR ^10g , and -OC(O)R ^10g ; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , - C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -NO ₂ , =O, -CN, and C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g . In some embodiments, R ¹¹ is selected from: halogen, -NO ₂ , -CN, -OR ^10g , -SR ^10g , and -N(R ^10g ) ₂ ; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , - N(R ^10g ) ₂ , -NO ₂ , =O, -CN, and C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g . In some embodiments, R ¹¹ is selected from: halogen, -NO ₂ , -CN, -OR ^10g , -SR ^10g , and - N(R ^10g ) ₂ ; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -NO ₂ , =O, and -CN. In some embodiments, R ¹¹ is selected from: C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)R ^10g _, -C(O)OR ^10g , -OC(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)OR ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g . In some embodiments, R ¹¹ is selected from: C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g , -C(O)OR ^10g , - OC(O)R ^10g , -NO ₂ , =O, -CN, and C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g . In some embodiments, R ¹¹ is selected from: C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , - N(R ^10g ) ₂ , -C(O)R ^10g , -NO ₂ , =O, -CN, and C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9g . In some embodiments, R ¹¹ is selected from: C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , - N(R ^10g ) ₂ , -C(O)R ^10g , -NO ₂ , =O, -CN, and C _3-10 carbocycle and 3- to 10-membered heterocycle. In some embodiments, R ¹¹ is selected from: C _1-6 alkyl optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -NO ₂ , =O, and -CN. In some embodiments, R ¹¹ is selected from: C _1-3 alkyl optionally substituted with one or more substituents independently selected from halogen and -OR ^10g . In some embodiments, R ¹¹ is selected from: C _1-3 alkyl optionally substituted with one or more -OR ^10g . In some embodiments, R ¹¹ is selected from: C _1-3 alkyl optionally substituted with one or more -OH. [0213] In some embodiments, for a compound or salt of Formula (II), R ¹² is selected from hydrogen; C _1-6 alkyl optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; and C _3-6 carbocycle and 3- to 10-membered heterocycle each optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; or R ¹² , R ¹¹ , and R ² come together to form a C ₅ -C ₁₀ bridged ring system. [0214] In some embodiments, R ¹² is selected from hydrogen; C _1-6 alkyl optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; and C _3-6 carbocycle and 3- to 10- membered heterocycle each optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; or R ¹² , R ¹¹ , and R ² come together to form a C ₅ -C ₁₀ bridged ring system. In some embodiments, R ¹² is selected from hydrogen; C _1-6 alkyl optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; and C _3-6 carbocycle and 3- to 10-membered heterocycle each optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h . In some embodiments, R ¹² is selected from hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , and SR ^10h . In some embodiments, R ¹² is selected from hydrogen; and C _1-6 alkyl. [0215] In some embodiments, R ¹² is hydrogen. In some embodiments, R ¹² is methyl. In some embodiments, R ¹² is ethyl. In some embodiments, R ¹² , R ¹¹ , and R ² come together to form a C ₅ - C ₁₀ bridged ring system. In some embodiments, R ¹² , R ¹¹ , and R ² come together to form a C ₅ -C ₁₀ bridged ring system selected from [1.1.1]bicyclopentane. [0216] In some embodiments, for a compound or salt of Formula (II), each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, - N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN. In some embodiments, each R ^9a is independently selected from: halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, - OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , -NO ₂ , =O, and -CN. In some embodiments, each R ^9a is independently selected from: halogen, -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , =O, and -CN. In some embodiments, each R ^9a is independently selected from: halogen and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, and - CN. In some embodiments, each R ^9a is independently selected from: fluoro and -CN; and C ₁ alkyl, optionally substituted with one or more substituents independently selected from fluoro, and -CN. In some embodiments, each R ^9a is independently selected from: fluoro and -CN; and C ₁ alkyl. In some embodiments, each R ^9a is independently selected from: fluoro and -CN. In some embodiments, each R ^9a is independently selected from: fluoro. In some embodiments, each R ^9a is independently selected from: -CN. [0217] In some embodiments, for a compound or salt of Formula (II), each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN. [0218] In some embodiments, each R ^9b is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, and -CN. In some embodiments, each R ^9b is independently selected from: halogen, -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , =O, and -CN. In some embodiments, each R ^9b is independently selected from: halogen. In some embodiments, each R ^9b is independently selected from: fluoro. In some embodiments, each R ^9b is independently selected from: halogen and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, and - CN. In some embodiments, each R ^9b is independently selected from: fluoro and -CN; and C ₁ alkyl, optionally substituted with one or more substituents independently selected from fluoro, and -CN. In some embodiments, each R ^9b is independently selected from: fluoro and -CN; and C ₁ alkyl. In some embodiments, each R ^9b is independently selected from: fluoro and -CN. In some embodiments, each R ^9b is independently selected from: fluoro. In some embodiments, each R ^9b is independently selected from: -CN. In some embodiments, each R ^9b is independently selected from: -F, -Cl, -Br, -CN, -OH, -OCH ₃ , -CH ₃ , -CF ₃ , -C(O)NH ₂ , and -CCH. In some embodiments, each R ^9b is independently selected from: -F, -Cl, -Br, -CN, -OH, -OCH ₃ , - CH ₃ , and -CF ₃ . [0219] In some embodiments, for a compound or salt of Formula (II), each R ^9b’ is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , - N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , - OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN. [0220] In some embodiments, each R ^9b’ is independently selected from: halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -NO ₂ , =O, and -CN. In some embodiments, each R ^9b’ is independently selected from: halogen, -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , =O, and -CN. In some embodiments, each R ^9b’ is independently selected from: halogen and CN. In some embodiments, each R ^9b’ is independently selected from: fluoro and CN. In some embodiments, each R ^9b’ is independently selected from: fluoro. In some embodiments, each R ^9b’ is independently selected from: fluoro, bromo, and CN. In some embodiments, each R ^9b’ is independently selected from: halogen and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, and - CN. In some embodiments, each R ^9b’ is independently selected from: fluoro and -CN; and C ₁ alkyl, optionally substituted with one or more substituents independently selected from fluoro, and -CN. In some embodiments, each R ^9b’ is independently selected from: fluoro and -CN; and C ₁ alkyl. In some embodiments, each R ^9b’ is independently selected from: fluoro and -CN. In some embodiments, each R ^9b’ is independently selected from: fluoro. In some embodiments, each R ^9b’ is independently selected from: -CN. [0221] In some embodiments, for a compound or salt of Formula (II), each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c , - N(R ^10c )C(O)N(R ^10c ) ₂ , -OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , - S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c _, -N(R ^10c )C(O)N(R ^10c ) ₂ , - OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , - NO ₂ , =O, =S, =N(R ^10c ), and -CN. [0222] In some embodiments, each R ^9c is independently selected from: halogen, -OR ^10c , -SR ^10c , - N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from: halogen, -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , =O, and -CN. In some embodiments, each R ^9c is independently selected from: halogen and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, and -CN. In some embodiments, each R ^9c is independently selected from: fluoro and -CN; and C ₁ alkyl, optionally substituted with one or more substituents independently selected from fluoro, and -CN. In some embodiments, each R ^9c is independently selected from: fluoro and -CN; and C ₁ alkyl. In some embodiments, each R ^9c is independently selected from: fluoro and -CN. In some embodiments, each R ^9c is independently selected from: fluoro. In some embodiments, each R ^9c is independently selected from: -CN. [0223] In some embodiments, for a compound or salt of Formula (II), each R ^9d is independently selected from: halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -C(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)R ^10d , - N(R ^10d )C(O)N(R ^10d ) ₂ , -OC(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)OR ^10d , -C(O)OR ^10d , - OC(O)R ^10d , -S(O)R ^10d , -S(O) ₂ R ^10d , -NO ₂ , =O, =S, =N(R ^10d ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -C(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)R ^10d _, - N(R ^10d )C(O)N(R ^10d ) ₂ , -OC(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)OR ^10d , -C(O)OR ^10d , - OC(O)R ^10d , -S(O)R ^10d , -S(O) ₂ R ^10d , -NO ₂ , =O, =S, =N(R ^10d ), and -CN; [0224] In some embodiments, each R ^9d is independently selected from: halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -NO ₂ , =O, and -CN. In some embodiments, each R ^9d is independently selected from: halogen, -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , =O, and -CN. In some embodiments, each R ^9d is independently selected from: halogen and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, and -CN. In some embodiments, each R ^9d is independently selected from: fluoro and -CN; and C ₁ alkyl, optionally substituted with one or more substituents independently selected from fluoro, and -CN. In some embodiments, each R ^9d is independently selected from: fluoro and -CN; and C ₁ alkyl. In some embodiments, each R ^9d is independently selected from: fluoro and -CN. In some embodiments, each R ^9d is independently selected from: fluoro. In some embodiments, each R ^9d is independently selected from: -CN. [0225] In some embodiments, for a compound or salt of Formula (II), each R ^9g is independently selected from: halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, - OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g _, - N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , - OC(O)R ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), and -CN. [0226] In some embodiments, each R ^9g is independently selected from: halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -NO ₂ , =O, and -CN. In some embodiments, each R ^9g is independently selected from: halogen, -NO ₂ , =O, -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, -NO ₂ , =O, and -CN. In some embodiments, each R ^9g is independently selected from: halogen and -CN; and C _1-3 alkyl, optionally substituted with one or more substituents independently selected from halogen, and -CN. In some embodiments, each R ^9g is independently selected from: fluoro and -CN; and C ₁ alkyl, optionally substituted with one or more substituents independently selected from fluoro, and -CN. In some embodiments, each R ^9g is independently selected from: fluoro and -CN; and C ₁ alkyl. In some embodiments, each R ^9g is independently selected from: fluoro and -CN. In some embodiments, each R ^9g is independently selected from: fluoro. In some embodiments, each R ^9b is independently selected from: -CN. [0227] In some embodiments, for a compound or salt of Formula (II), each R ^10a is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, - OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. [0228] In some embodiments, each R ^10a is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10a is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10-membered heterocycle. [0229] In some embodiments, each R ^10a is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl). In some embodiments, each R ^10a is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10a is independently selected from: hydrogen. [0230] In some embodiments, for a compound or salt of Formula (II), each R ^10b is independently selected from: each R ^10b is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10b is selected from hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10- membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10b is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _{3- 10} carbocycle, and 3- to 10-membered heterocycle. [0231] In some embodiments, each R ^10b is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10b is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl). In some embodiments, each R ^10b is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10b is independently selected from: C _1-3 alkyl. In some embodiments, each R ^10b is methyl. In some embodiments, each R ^10b is hydrogen. [0232] In some embodiments, for a compound or salt of Formula (II), each R ^10c is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10- membered heterocycle, and C _1-6 haloalkyl. [0233] In some embodiments, each R ^10c is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10c is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10c is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl). In some embodiments, each R ^10c is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10c is hydrogen. [0234] In some embodiments, for a compound or salt of Formula (II), each R ^10d is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10- membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10d is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3- 10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10d is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10- membered heterocycle. In some embodiments, each R ^10d is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl). In some embodiments, each R ^10d is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10d is hydrogen. [0235] In some embodiments, for a compound or salt of Formula (II), each R ^10e is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10- membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10e is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _{3- 10} carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10e is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10- membered heterocycle. In some embodiments, each R ^10e is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl). In some embodiments, each R ^10e is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10e is hydrogen. [0236] In some embodiments, for a compound or salt of Formula (II), each R ^10f is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10- membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10f is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _{3- 10} carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10f is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10- membered heterocycle. In some embodiments, each R ^10f is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl). In some embodiments, each R ^10f is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10f is hydrogen. [0237] In some embodiments, for a compound or salt of Formula (II), each R ^10g is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , - NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10g is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10- membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, - CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10-membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10g is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10g is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10g is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl). In some embodiments, each R ^10g is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10g is hydrogen. [0238] In some embodiments, for a compound or salt of Formula (II), each R ^10h is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, - NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10- membered heterocycle, and C _1-6 haloalkyl. In some embodiments, each R ^10h is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3- 10 carbocycle, and 3- to 10-membered heterocycle. In some embodiments, each R ^10h is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl); and C _3-10 carbocycle, and 3- to 10- membered heterocycle. In some embodiments, each R ^10h is independently selected from: hydrogen; and C _1-6 alkyl, optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl). In some embodiments, each R ^10h is independently selected from: hydrogen; and C _1-6 alkyl. In some embodiments, each R ^10h is hydrogen. [0239] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B31, B45, B39, B145, B33, B206, B92, B82, B189, B278, B221, B238, B236, B100, B103, B23, B9, B62, B123, B43, B324, B83, B142, B77, B57, B78, B191, B232, B79, B314, B110, B55, B307, B147, B315, B139, B355, B225, B248, B222, B272, and B266. [0240] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B31, B45, B39, B145, B33, B206, B92, B82, B189, B278, B221, B238, B236, B100, B103, B23, B9, B62, B123, B43, B324, B83, B142, B77, B57, B78, B191, B232, B79, B314, B110, B55, B307, B147, B315, B139, B355, B225, B248, B222, B272, B266, B141, B120, B13, B332, B269, B281, B229, B65, B17, B227, B247, B176, B291, B80, B322, B319, B118, B4, B6, B214, B89, B126, B296, B249, B366, B133, B30, B303, B132, B330, B338, B1, B233, B81, B106, B94, B199, B53, B128, B356, B306, B312, B336, B323, B358, B164, and B102. [0241] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B31, B45, B39, B145, B33, B206, B92, B82, B189, B278, B221, B238, B236, B100, B103, B23, B9, B62, B123, B43, B324, B83, B142, B77, B57, B78, B191, B232, B79, B314, B110, B55, B307, B147, B315, B139, B355, B225, B248, B222, B272, B266, B120, B13, B332, B269, B281, B229, B65, B17, B227, B247, B176, B291, B80, B322, B319, B118, B4, B6, B214, B89, B126, B296, B249, B366, B133, B30, B303, B132, B330, B338, B1, B233, B81, B106, B94, B199, B53, B128, B356, B306, B312, B336, B323, B358, B164, B102, B29, B279, B54, B241, B268, B105, B121, B114, B137, B217, B84, B181, B141, B226, B91, B14, B101, B169, B117, B326, B113, B310, B292, B34, B152, B321, B202, B210, B154, B267, B327, B87, B243, B329, B130, B231, B354, B116, B349, B346, B230, B339, B320, B16, B295, B290, B127, B234, B288, B129, B204, B37, B32, B237, B350, B367, B228, B70, B124, B160, B331, B76, B85, B136, B52, B188, B8, B155, B223, B44, B7, B88, B108, B135, B64, B264, B119, B286, B35, B334, B46, B42, B69, B352, B280, B59, B25, B99, B144, B341, B60, B148, B284, B12, B283, B342, B245, B2, B38, and B150. [0242] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B31, B45, B39, B145, B33, B206, B92, B82, B189, B278, B221, B238, B236, B100, B103, B23, B9, B62, B123, B43, B324, B83, B142, B77, B57, B78, B191, B232, B79, B314, B110, B55, B307, B147, B315, B139, B355, B225, B248, B222, B272, B266, B120, B13, B332, B269, B281, B229, B65, B17, B227, B247, B176, B291, B80, B322, B319, B118, B4, B6, B214, B89, B126, B296, B249, B366, B133, B30, B303, B132, B330, B338, B1, B233, B81, B106, B94, B199, B53, B128, B356, B306, B312, B336, B323, B358, B164, B102, B29, B279, B54, B241, B268, B105, B121, B114, B137, B217, B84, B181, B141, B226, B91, B14, B101, B169, B117, B326, B113, B310, B292, B34, B152, B321, B202, B210, B154, B267, B327, B87, B243, B329, B130, B231, B354, B116, B349, B346, B230, B339, B320, B16, B295, B290, B127, B234, B288, B129, B204, B37, B32, B237, B350, B367, B228, B70, B124, B160, B331, B76, B85, B136, B52, B188, B8, B155, B223, B44, B7, B88, B108, B135, B64, B264, B119, B286, B35, B334, B46, B42, B69, B352, B280, B59, B25, B99, B144, B341, B60, B148, B284, B12, B283, B342, B245, B2, B38, B150, B337, B58, B325, B302, B140, B274, B304, B235, B270, B73, B74, B93, B344, B122, B300, B97, B112, B212, B146, B138, B328, B95, B357, B125, B56, B41, B63, B265, B96, B273, B297, B353, B68, B205, B163, B27, B18, B72, B182, B313, B200, B244, B104, B170, B172, B178, B194, B340, B156, B343, B161, B301, B134, B359, B203, B157, B28, B49, B275, B218, B251, and B335. [0243] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B31, B45, B39, B145, B33, B206, B92, B82, B189, B278, B221, B238, B236, B100, B103, B23, B9, B62, B123, B43, B324, B83, B142, B77, B57, B78, B191, B232, B79, B314, B110, B55, B307, B147, B315, B139, B355, B225, B248, B222, B272, B266, B120, B13, B332, B269, B281, B229, B65, B17, B227, B247, B176, B291, B80, B322, B319, B118, B4, B6, B214, B89, B126, B296, B249, B366, B133, B30, B303, B132, B330, B338, B1, B233, B81, B106, B94, B199, B53, B128, B356, B306, B312, B336, B323, B358, B164, B102, B29, B279, B54, B241, B268, B105, B121, B114, B137, B217, B84, B181, B141, B226, B91, B14, B101, B169, B117, B326, B113, B310, B292, B34, B152, B321, B202, B210, B154, B267, B327, B87, B243, B329, B130, B231, B354, B116, B349, B346, B230, B339, B320, B16, B295, B290, B127, B234, B288, B129, B204, B37, B32, B237, B350, B367, B228, B70, B124, B160, B331, B76, B85, B136, B52, B188, B8, B155, B223, B44, B7, B88, B108, B135, B64, B264, B119, B286, B35, B334, B46, B42, B69, B352, B280, B59, B25, B99, B144, B341, B60, B148, B284, B12, B283, B342, B245, B2, B38, B150, B337, B58, B325, B302, B140, B274, B304, B235, B270, B73, B74, B93, B344, B122, B300, B97, B112, B212, B146, B138, B328, B95, B357, B125, B56, B41, B63, B265, B96, B273, B297, B353, B68, B205, B163, B27, B18, B72, B182, B313, B200, B244, B104, B170, B172, B178, B194, B340, B156, B343, B161, B301, B134, B359, B203, B157, B28, B49, B275, B218, B251, B335, B348, B309, B22, B90, B209, B109, B153, B165, B190, B197, B171, B364, B308, B240, B201, B193, B224, B3, B71, B67, B360, B174, B294, B51, B166, B162, B220, B345, B184, B242, B299, B187, B149, B287, B256, B277, B250, B252, B282, and B213. [0244] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B31, B45, B39, B145, B33, B206, B92, B82, B189, B278, B221, B238, B236, B100, B103, B23, B9, B62, B123, B43, B324, B83, B142, B77, B57, B78, B191, B232, B79, B314, B110, B55, B307, B147, B315, B139, B355, B225, B248, B222, B272, B266, B120, B13, B332, B269, B281, B229, B65, B17, B227, B247, B176, B291, B80, B322, B319, B118, B4, B6, B214, B89, B126, B296, B249, B366, B133, B30, B303, B132, B330, B338, B1, B233, B81, B106, B94, B199, B53, B128, B356, B306, B312, B336, B323, B358, B164, B102, B29, B279, B54, B241, B268, B105, B121, B114, B137, B217, B84, B181, B141, B226, B91, B14, B101, B169, B117, B326, B113, B310, B292, B34, B152, B321, B202, B210, B154, B267, B327, B87, B243, B329, B130, B231, B354, B116, B349, B346, B230, B339, B320, B16, B295, B290, B127, B234, B288, B129, B204, B37, B32, B237, B350, B367, B228, B70, B124, B160, B331, B76, B85, B136, B52, B188, B8, B155, B223, B44, B7, B88, B108, B135, B64, B264, B119, B286, B35, B334, B46, B42, B69, B352, B280, B59, B25, B99, B144, B341, B60, B148, B284, B12, B283, B342, B245, B2, B38, B150, B337, B58, B325, B302, B140, B274, B304, B235, B270, B73, B74, B93, B344, B122, B300, B97, B112, B212, B146, B138, B328, B95, B357, B125, B56, B41, B63, B265, B96, B273, B297, B353, B68, B205, B163, B27, B18, B72, B182, B313, B200, B244, B104, B170, B172, B178, B194, B340, B156, B343, B161, B301, B134, B359, B203, B157, B28, B49, B275, B218, B251, B335, B348, B309, B22, B90, B209, B109, B153, B165, B190, B197, B171, B364, B308, B240, B201, B193, B224, B3, B71, B67, B360, B174, B294, B51, B166, B162, B220, B345, B184, B242, B299, B187, B149, B287, B256, B277, B250, B252, B282, B213, B362, B10, B40, B276, B50, B271, B48, B98, B246, B311, B47, B5, B11, B15, B19, B20, B21, B24, B26, B61, B66, B86, B107, B111, B115, B131, B143, B151, B158, B159, B167, B168, B173, B175, B177, B180, B183, B185, B186, B192, B195, B196, B198, B207, B208, B211, B215, B216, B219, B239, B253, B254, B255, B285, B289, B333, B347, B351, B361, B363, and B365. [0245] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B31, B45, B39, B145, B33, B206, B92, B82, B189, B278, B221, B238, B236, B100, B103, B23, B9, B62, B123, B43, B324, B83, B142, B77, B57, B78, B191, B232, B79, B314, B110, B55, B307, B147, B315, B139, B355, B225, B248, B222, B272, B266, B120, B13, B332, B269, B281, B229, B65, B17, B227, B247, B176, B291, B80, B322, B319, B118, B4, B6, B214, B89, B126, B296, B249, B366, B133, B30, B303, B132, B330, B338, B1, B233, B81, B106, B94, B199, B53, B128, B356, B306, B312, B336, B323, B358, B164, B102, B29, B279, B54, B241, B268, B105, B121, B114, B137, B217, B84, B181, B141, B226, B91, B14, B101, B169, B117, B326, B113, B310, B292, B34, B152, B321, B202, B210, B154, B267, B327, B87, B243, B329, B130, B231, B354, B116, B349, B346, B230, B339, B320, B16, B295, B290, B127, B234, B288, B129, B204, B37, B32, B237, B350, B367, B228, B70, B124, B160, B331, B76, B85, B136, B52, B188, B8, B155, B223, B44, B7, B88, B108, B135, B64, B264, B119, B286, B35, B334, B46, B42, B69, B352, B280, B59, B25, B99, B144, B341, B60, B148, B284, B12, B283, B342, B245, B2, B38, B150, B337, B58, B325, B302, B140, B274, B304, B235, B270, B73, B74, B93, B344, B122, B300, B97, B112, B212, B146, B138, B328, B95, B357, B125, B56, B41, B63, B265, B96, B273, B297, B353, B68, B205, B163, B27, B18, B72, B182, B313, B200, B244, B104, B170, B172, B178, B194, B340, B156, B343, B161, B301, B134, B359, B203, B157, B28, B49, B275, B218, B251, B335, B348, B309, B22, B90, B209, B109, B153, B165, B190, B197, B171, B364, B308, B240, B201, B193, B224, B3, B71, B67, B360, B174, B294, B51, B166, B162, B220, B345, B184, B242, B299, B187, B149, B287, B256, B277, B250, B252, B282, B213, B362, B10, B40, B276, B50, B271, B48, B98, B246, B311, B47, B5, B11, B15, B19, B20, B21, B24, B26, B61, B66, B86, B107, B111, B115, B131, B143, B151, B158, B159, B167, B168, B173, B175, B177, B180, B183, B185, B186, B192, B195, B196, B198, B207, B208, B211, B215, B216, B219, B239, B253, B254, B255, B285, B289, B333, B347, B351, B361, B363, B365, B179, B257, B258, B259, B262, B263, and B293. [0246] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B23, B9, B62, B31, B45, B123, B43, B206, B39, and B324. [0247] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B23, B9, B62, B31, B45, B123, B43, B206, B39, B324, B145, B92, B83, B55, B142, B82, B1, B322, B326, B33, B307, B77, B189, B147, B120, B14, B13, B57, B278, B303, B315, B319, and B332. [0248] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B23, B9, B62, B31, B45, B123, B43, B206, B39, B324, B145, B92, B83, B55, B142, B82, B1, B322, B326, B33, B307, B77, B189, B147, B120, B14, B13, B57, B278, B303, B315, B319, B332, B128, B221, B78, B118, B4, B139, B355, B356, B12, B238, B6, B269, B281, B229, B121, B65, B114, B132, B306, B312, B17, B225, B330, B191, B226, B236, B113, B320, B214, B89, B227, B233, B336, B248, B152, B247, B69, B323, B358, B164, B126, B76, B295, B341, B310, B176, B296, B232, B81, B329, B222, B284, B79, B106, B37, B314, B350, B44, B292, B94, B32, B367, B110, B199, B101, B64, B8, B249, B116, B29, B137, B279, B100, B272, B136, B366, B91, B349, B264, B217, B130, B35, B59, B54, and B321. [0249] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B23, B9, B62, B31, B45, B123, B43, B206, B39, B324, B145, B92, B83, B55, B142, B82, B1, B322, B326, B33, B307, B77, B189, B147, B120, B14, B13, B57, B278, B303, B315, B319, B332, B128, B221, B78, B118, B4, B139, B355, B356, B12, B238, B6, B269, B281, B229, B121, B65, B114, B132, B306, B312, B17, B225, B330, B191, B226, B236, B113, B320, B214, B89, B227, B233, B336, B248, B152, B247, B69, B323, B358, B164, B126, B76, B295, B341, B310, B176, B296, B232, B81, B329, B222, B284, B79, B106, B37, B314, B350, B44, B292, B94, B32, B367, B110, B199, B101, B64, B8, B249, B116, B29, B137, B279, B100, B272, B136, B366, B91, B349, B264, B217, B130, B35, B59, B54, B321, B202, B362, B16, B70, B103, B68, B241, B169, B266, B327, B41, B204, B300, B52, B84, B234, B231, B334, B346, B338, B188, B230, B46, B291, B124, B181, B133, B117, B56, B87, B228, B339, B73, B297, B353, B210, B112, B88, B352, B25, B154, B80, B7, B302, B268, B141, B155, B42, B325, B108, B34, B223, B38, B354, B313, B267, B304, B58, B160, B97, B244, B342, B290, B288, B265, B93, B148, B102, B105, B22, B283, B280, B348, B337, B53, B119, B2, B237, B10, B286, B344, B67, and B360. [0250] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B23, B9, B62, B31, B45, B123, B43, B206, B39, B324, B145, B92, B83, B55, B142, B82, B1, B322, B326, B33, B307, B77, B189, B147, B120, B14, B13, B57, B278, B303, B315, B319, B332, B128, B221, B78, B118, B4, B139, B355, B356, B12, B238, B6, B269, B281, B229, B121, B65, B114, B132, B306, B312, B17, B225, B330, B191, B226, B236, B113, B320, B214, B89, B227, B233, B336, B248, B152, B247, B69, B323, B358, B164, B126, B76, B295, B341, B310, B176, B296, B232, B81, B329, B222, B284, B79, B106, B37, B314, B350, B44, B292, B94, B32, B367, B110, B199, B101, B64, B8, B249, B116, B29, B137, B279, B100, B272, B136, B366, B91, B349, B264, B217, B130, B35, B59, B54, B321, B202, B362, B16, B70, B103, B68, B241, B169, B266, B327, B41, B204, B300, B52, B84, B234, B231, B334, B346, B338, B188, B230, B46, B291, B124, B181, B133, B117, B56, B87, B228, B339, B73, B297, B353, B210, B112, B88, B352, B25, B154, B80, B7, B302, B268, B141, B155, B42, B325, B108, B34, B223, B38, B354, B313, B267, B304, B58, B160, B97, B244, B342, B290, B288, B265, B93, B148, B102, B105, B22, B283, B280, B348, B337, B53, B119, B2, B237, B10, B286, B344, B67, B360, B309, B156, B243, B245, B301, B212, B27, B135, B205, B40, B172, B273, B150, B203, B276, B85, B163, B170, B294, B193, B71, B50, B161, B49, B256, B144, B190, B3, B271, B140, B184, B250, B252, B48, B331, B146, B98, B277, B246, B194, B200, B311, B134, B274, B127, and B47. [0251] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B23, B9, B62, B31, B45, B123, B43, B206, B39, B324, B145, B92, B83, B55, B142, B82, B1, B322, B326, B33, B307, B77, B189, B147, B120, B14, B13, B57, B278, B303, B315, B319, B332, B128, B221, B78, B118, B4, B139, B355, B356, B12, B238, B6, B269, B281, B229, B121, B65, B114, B132, B306, B312, B17, B225, B330, B191, B226, B236, B113, B320, B214, B89, B227, B233, B336, B248, B152, B247, B69, B323, B358, B164, B126, B76, B295, B341, B310, B176, B296, B232, B81, B329, B222, B284, B79, B106, B37, B314, B350, B44, B292, B94, B32, B367, B110, B199, B101, B64, B8, B249, B116, B29, B137, B279, B100, B272, B136, B366, B91, B349, B264, B217, B130, B35, B59, B54, B321, B202, B362, B16, B70, B103, B68, B241, B169, B266, B327, B41, B204, B300, B52, B84, B234, B231, B334, B346, B338, B188, B230, B46, B291, B124, B181, B133, B117, B56, B87, B228, B339, B73, B297, B353, B210, B112, B88, B352, B25, B154, B80, B7, B302, B268, B141, B155, B42, B325, B108, B34, B223, B38, B354, B313, B267, B304, B58, B160, B97, B244, B342, B290, B288, B265, B93, B148, B102, B105, B22, B283, B280, B348, B337, B53, B119, B2, B237, B10, B286, B344, B67, B360, B309, B156, B243, B245, B301, B212, B27, B135, B205, B40, B172, B273, B150, B203, B276, B85, B163, B170, B294, B193, B71, B50, B161, B49, B256, B144, B190, B3, B271, B140, B184, B250, B252, B48, B331, B146, B98, B277, B246, B194, B200, B311, B134, B274, B127, B47, B5, B11, B15, B18, B19, B20, B21, B24, B26, B28, B30, B51, B60, B61, B63, B66, B72, B74, B86, B90, B95, B96, B99, B104, B107, B109, B111, B115, B122, B125, B129, B131, B138, B143, B149, B151, B153, B157, B158, B159, B162, B165, B166, B167, B168, B171, B173, B174, B175, B177, B178, B179, B180, B182, B183, B185, B186, B187, B192, B195, B196, B197, B198, B201, B207, B208, B209, B211, B213, B215, B216, B218, B219, B220, B224, B235, B239, B240, B242, B251, B253, B254, B255, B270, B275, B282, B285, B287, B289, B299, B308, B328, B333, B335, B340, B343, B345, B347, B351, B357, B359, B361, B363, B364, and B365. [0252] In some embodiments, the compound or salt of Formula (II) is selected from: B75, B36, B23, B9, B62, B31, B45, B123, B43, B206, B39, B324, B145, B92, B83, B55, B142, B82, B1, B322, B326, B33, B307, B77, B189, B147, B120, B14, B13, B57, B278, B303, B315, B319, B332, B128, B221, B78, B118, B4, B139, B355, B356, B12, B238, B6, B269, B281, B229, B121, B65, B114, B132, B306, B312, B17, B225, B330, B191, B226, B236, B113, B320, B214, B89, B227, B233, B336, B248, B152, B247, B69, B323, B358, B164, B126, B76, B295, B341, B310, B176, B296, B232, B81, B329, B222, B284, B79, B106, B37, B314, B350, B44, B292, B94, B32, B367, B110, B199, B101, B64, B8, B249, B116, B29, B137, B279, B100, B272, B136, B366, B91, B349, B264, B217, B130, B35, B59, B54, B321, B202, B362, B16, B70, B103, B68, B241, B169, B266, B327, B41, B204, B300, B52, B84, B234, B231, B334, B346, B338, B188, B230, B46, B291, B124, B181, B133, B117, B56, B87, B228, B339, B73, B297, B353, B210, B112, B88, B352, B25, B154, B80, B7, B302, B268, B141, B155, B42, B325, B108, B34, B223, B38, B354, B313, B267, B304, B58, B160, B97, B244, B342, B290, B288, B265, B93, B148, B102, B105, B22, B283, B280, B348, B337, B53, B119, B2, B237, B10, B286, B344, B67, B360, B309, B156, B243, B245, B301, B212, B27, B135, B205, B40, B172, B273, B150, B203, B276, B85, B163, B170, B294, B193, B71, B50, B161, B49, B256, B144, B190, B3, B271, B140, B184, B250, B252, B48, B331, B146, B98, B277, B246, B194, B200, B311, B134, B274, B127, B47, B5, B11, B15, B18, B19, B20, B21, B24, B26, B28, B30, B51, B60, B61, B63, B66, B72, B74, B86, B90, B95, B96, B99, B104, B107, B109, B111, B115, B122, B125, B129, B131, B138, B143, B149, B151, B153, B157, B158, B159, B162, B165, B166, B167, B168, B171, B173, B174, B175, B177, B178, B179, B180, B182, B183, B185, B186, B187, B192, B195, B196, B197, B198, B201, B207, B208, B209, B211, B213, B215, B216, B218, B219, B220, B224, B235, B239, B240, B242, B251, B253, B254, B255, B270, B275, B282, B285, B287, B289, B299, B308, B328, B333, B335, B340, B343, B345, B347, B351, B357, B359, B361, B363, B364, B365, B257, B258, B259, B262, B263, and B293. [0253] In some embodiments, for a compound or salt of Formula (II) each R ¹ is independently selected from: deuterium, -N ₃ , halogen, -NO ₂ , -CN, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , - C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , and -S(O) ₂ R ^10a ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , - C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -N(R ^10a )C(O)N(R ^10a ) ₂ , - OC(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)OR ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9a ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), - CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9a . R ² is selected from: deuterium, -N ₃ , halogen, - NO ₂ , -CN, -OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , - N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , - S(O)R ^10b , and -S(O) ₂ R ^10b ; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10-membered heterocycle are each optionally substituted with one or more R ^9b ; and C _3-10 carbocycle and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b , -N(R ^10b )C(O)N(R ^10b ) ₂ , - OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), -CN, C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, wherein C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl are each optionally substituted with one or more R ^9b ; or R ² together with R ¹¹ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9b’ . R ³ and R ⁴ are each independently selected from: hydrogen, deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , - NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -NO ₂ , and -CN; or R ³ together with R ⁴ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9c . R ⁵ and R ⁶ are each independently selected from: hydrogen, deuterium, -N ₃ , halogen, -OR ^10d , -SR ^10d , - N(R ^10d ) ₂ , -NO ₂ , and -CN; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -NO ₂ , and -CN; or R ⁵ together with R ⁶ form a 3- to 10- membered heterocycle or C _3-10 carbocycle, wherein the 3- to 10- membered heterocycle or C _3-10 carbocycle is optionally substituted with one or more R ^9d . R ⁷ is selected from: hydrogen and C _1-6 alkyl optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10e , -SR ^10e , -N(R ^10e ) ₂ , - NO ₂ , and -CN. R ⁸ is selected from: hydrogen; and C _1-6 alkyl optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10f , -SR ^10f , -N(R ^10f ) ₂ , -NO ₂ , and -CN. R ¹¹ is selected from: deuterium, -N ₃ , halogen, -NO ₂ , -CN, -OR ^10g , -SR ^10g , - N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , -OC(O)N(R ^10g ) ₂ , - N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , and -S(O) ₂ R ^10g ; and C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , - C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , - OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =S, =N(R ^10g ), -CN, C _3-10 carbocycle and 3- to 10-membered heterocycle, wherein the C _3-10 carbocycle and 3- to 10- membered heterocycle are each optionally substituted with one or more R ^9g . R ¹² is selected from hydrogen; C _1-6 alkyl optionally substituted with one or more substituents independently selected from the group consisting of deuterium, -N ₃ , halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; and C _3-6 carbocycle and 3- to 10-membered heterocycle each optionally substituted with one or more substituents independently selected from the group consisting of halogen, CN, OH, OR ^10h , N(R ^10h ) ₂ , NO ₂ , C(O)R ^10h , SR ^10h , and S(O)R ^10h ; or R ¹² , R ¹¹ , and R ² come together to form a C ₅ -C ₁₀ bridged ring system. each R ^9a is independently selected from: deuterium, -N ₃ , halogen, -OR ^10a , -SR ^10a , -N(R ^10a ) ₂ , -C(O)R ^10a , - C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from halogen, -OR ^10a , -SR ^10a , - N(R ^10a ) ₂ , -C(O)R ^10a , -C(O)N(R ^10a ) ₂ , -N(R ^10a )C(O)R ^10a _, -N(R ^10a )C(O)N(R ^10a ) ₂ , -OC(O)N(R ^10a ) ₂ , - N(R ^10a )C(O)OR ^10a , -C(O)OR ^10a , -OC(O)R ^10a , -S(O)R ^10a , -S(O) ₂ R ^10a , -NO ₂ , =O, =S, =N(R ^10a ), and -CN. each R ^9b is independently selected from: deuterium, -N ₃ , halogen, -OR ^10b , -SR ^10b , - N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , -OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, -OR ^10b , - SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , - OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN. each R ^9b’ is independently selected from: deuterium, -N ₃ , halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , - OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - OR ^10b , -SR ^10b , -N(R ^10b ) ₂ , -C(O)R ^10b , -C(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)R ^10b _, -N(R ^10b )C(O)N(R ^10b ) ₂ , - OC(O)N(R ^10b ) ₂ , -N(R ^10b )C(O)OR ^10b , -C(O)OR ^10b , -OC(O)R ^10b , -S(O)R ^10b , -S(O) ₂ R ^10b , -NO ₂ , =O, =S, =N(R ^10b ), and -CN. each R ^9c is independently selected from: deuterium, -N ₃ , halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c _, -N(R ^10c )C(O)N(R ^10c ) ₂ , - OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - OR ^10c , -SR ^10c , -N(R ^10c ) ₂ , -C(O)R ^10c , -C(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)R ^10c _, -N(R ^10c )C(O)N(R ^10c ) ₂ , - OC(O)N(R ^10c ) ₂ , -N(R ^10c )C(O)OR ^10c , -C(O)OR ^10c , -OC(O)R ^10c , -S(O)R ^10c , -S(O) ₂ R ^10c , -NO ₂ , =O, =S, =N(R ^10c ), and -CN. each R ^9d is independently selected from: deuterium, -N ₃ , halogen, - OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -C(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)R ^10d _, -N(R ^10d )C(O)N(R ^10d ) ₂ , - OC(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)OR ^10d , -C(O)OR ^10d , -OC(O)R ^10d , -S(O)R ^10d , -S(O) ₂ R ^10d , -NO ₂ , =O, =S, =N(R ^10d ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - OR ^10d , -SR ^10d , -N(R ^10d ) ₂ , -C(O)R ^10d , -C(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)R ^10d , -N(R ^10d )C(O)N(R ^10d ) ₂ , - OC(O)N(R ^10d ) ₂ , -N(R ^10d )C(O)OR ^10d , -C(O)OR ^10d , -OC(O)R ^10d , -S(O)R ^10d , -S(O) ₂ R ^10d , -NO ₂ , =O, =S, =N(R ^10d ), and -CN. each R ^9g is independently selected from: deuterium, -N ₃ , halogen, - OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g _, -N(R ^10g )C(O)N(R ^10g ) ₂ , - OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), and -CN; and C _1-3 alkyl, C _2-3 alkenyl, and C _2-3 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - OR ^10g , -SR ^10g , -N(R ^10g ) ₂ , -C(O)R ^10g , -C(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)R ^10g , -N(R ^10g )C(O)N(R ^10g ) ₂ , - OC(O)N(R ^10g ) ₂ , -N(R ^10g )C(O)OR ^10g , -C(O)OR ^10g , -OC(O)R ^10g , -S(O)R ^10g , -S(O) ₂ R ^10g , -NO ₂ , =O, =S, =N(R ^10g ), and -CN. each R ^10a , R ^10b , R ^10c , R ^10d , R ^10e , R ^10f , R ^10g , R ^10h is independently selected from: hydrogen; C _1-6 alkyl, C _2-6 alkenyl, and C _2-6 alkynyl, each of which is optionally substituted with one or more substituents independently selected from deuterium, -N ₃ , halogen, - CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _3-10 carbocycle, 3- to 10-membered heterocycle; and C _3-10 carbocycle, and 3- to 10-membered heterocycle, each of which is optionally substituted with one or more substituents independently selected from halogen, -CN, -OH, -SH, -NO ₂ , -NH ₂ , =O, =S, -O-C _1-6 alkyl, -S-C _1-6 alkyl, -N(C _1-6 alkyl) ₂ , -NH(C _1-6 alkyl), C _1-6 alkyl, C _2-6 alkenyl, C _2-6 alkynyl, C _3-10 carbocycle, 3- to 10- membered heterocycle, and C _1-6 haloalkyl. In some embodiments, R ³ is -D. In some embodiments, R ⁴ is -D. In some embodiments, R ⁵ is -D. In some embodiments, R ⁶ is -D. In some embodiments, R ⁷ is -D. In some embodiments, R ⁸ is -D. In some embodiments, R ¹¹ is -D. In some embodiments, R ¹² is -D. Therapeutic Applications [0254] Methods of administration of a compound or salt of Formula (I), (II), or (III) discussed herein may be used for the treatment of cardiovascular diseases or disorders. Methods of administration of a compound or salt of Formula (I), (II), or (III) discussed herein may be used for the treatment of cardiac diseases and disorders. Methods of administration of a compound or salt of Formula (I), (II), or (III) discussed herein may be used for the treatment of myopathies. [0255] Examples of cardiac diseases and disorders include but are not limited to heart attack, heart failure, heart infection, endocarditis, myocarditis, pericarditis, arrhythmia, abnormal heart rhythms, aorta disease, Marfan syndrome, vascular disease, stroke, congenital heart disease, coronary artery disease, rhematic heart disease, peripheral vascular disease, heart valve disease, pericardial disease, heart muscle disease, cardiomyopathy, and deep vein thrombosis and pulmonary embolism. Examples of heart infections include but are not limited to endocarditis, myocarditis, and pericarditis. [0256] Methods of administration of a compound or salt of Formula (I), (II), or (III) discussed herein may be used for the treatment of myopathies. In some embodiments, the myopathy is a cardiac myopathy. In some embodiments, the present disclosure provides a method of treating a condition selected from hypertrophic cardiomyopathy (HCM). In some embodiments, the present disclosure provides a method of treating a condition selected from hypertrophic cardiomyopathy (HCM); heart failure with preserved ejection fraction (HFpEF); disorders of relaxation; disorders of chamber stiffness (diabetic HFpEF); dilated cardiomyopathy (DCM); ischemic cardiomyopathy; cardiac transplant allograft vasculopathy; restrictive cardiomyopathy; valvular heart disease (e.g., aortic stenosis - including elderly post AVR/TAVR and congenital forms); left ventricular (LV) hypertrophy; ischemia; and andangina. In some embodiments, said heart failure with preserved ejection fraction (HFpEF) comprises one or more disorders selected from disorders of relaxation and disorders of chamber stiffness (diabetic HFpEF). In some embodiments, said left ventricular (LV) hypertrophy is malignant left ventricular (LV) hypertrophy. In some embodiments, said restrictive cardiomyopathy comprises one or more subgroups selected from inflammatory subgroups, infiltrative subgroups, storage subgroups, idiopathic/inherited subgroups, congenital heart disease subgroups. In some embodiments, said inflammatory subgroups comprise one or more subgroups selected from Loefllers and EMF. In some embodiments, said inflammatory subgroups comprise one or more subgroups selected from amyloid, sarcoid, and XRT. In some embodiments, said storage subgroups comprise one or more subgroups selected from hemochromatosis, Fabry, and glycogen storage disease. In some embodiments, said idiopathic/inherited subgroups comprise one or more subgroups selected from Trop I (beta myosin HC), Trop T (alpha cardiac actin), and desmin related subgroups. In some embodiments, said congenital heart disease subgroups comprise one or more subgroups selected from pressure-overloaded RV, Tetralogy of Fallot, and pulmonic stenosis. In an aspect, the present disclosure provides a method of treating hypertrophic cardiomyopathy or a related condition comprising administering to a subject in need thereof a compound or salt disclosed herein. [0257] In an aspect, the present disclosure provides a method of treating obstructive hypertrophic cardiomyopathy comprising administering to a subject in need thereof a compound or salt disclosed herein. In an aspect, the present disclosure provides a method of treating non- obstructive hypertrophic cardiomyopathy comprising administering to a subject in need thereof a compound or salt of disclosed herein. In an aspect, the present disclosure provides a method of treating heart failure with preserved ejection fraction comprising administering to a subject in need thereof a compound or disclosed herein. In an aspect, the present disclosure provides a method of treating left ventricle stiffness comprising administering to a subject in need thereof a compound or salt disclosed herein. [0258] In an aspect, the present disclosure provides a method of treating a condition selected from hypertrophic cardiomyopathy (HCM); disorders of relaxation; ischemic cardiomyopathy; cardiac transplant allograft vasculopathy; restrictive cardiomyopathy; left ventricular (LV) hypertrophy; ischemia; and andangin, the method comprising administering a ventricular- selective agent. [0259] In an aspect, the present disclosure provides methods of treating atrial cardiopathy, Heart failure with ejection fraction (e.g., Heart failure with preserved ejection fraction (HFpEF), Heart failure with reduced ejection fraction (HFrEF)), arrhythmia (e.g., Atrial fibrillation), stroke (e.g., Cardioembolic stroke, Cryptogenic stroke), valve disease (e.g., Mitral valve disease, or Tricuspid valve disease), comprises administering an atrial-selective agent. In an aspect, the present disclosure provides methods of treating atrial cardiopathy, Heart failure with preserved ejection fraction (HFpEF), Heart failure with reduced ejection fraction (HFrEF), Atrial fibrillation, Cardioembolic stroke, Cryptogenic stroke, Mitral valve disease, or Tricuspid valve disease, comprises administering an atrial-selective agent. In an aspect, the present disclosure provides methods of treating atrial cardiopathy. In some embodiments, the present disclosure provides a method of treating HFpEF. In some embodiments, the present disclosure provides a method of treating HFrEF. In some embodiments, the present disclosure provides a method of treating Atrial fibrillation. In some embodiments, the present disclosure provides a method of treating Cardioembolic stroke. In some embodiments, the present disclosure provides a method of treating Cryptogenic stroke. In some embodiments, the present disclosure provides a method of treating Mitral valve disease. In some embodiments, the present disclosure provides a method of treating Tricuspid valve disease.