PURIFICATION OF TESTOSTERONE ENANTHATE

Title:

PURIFICATION OF TESTOSTERONE ENANTHATE

Document Type and Number:

Japanese Patent JPS562999

Kind Code:

A

Abstract:

PURPOSE: To increase the crystal size and the bulk density of crystallized testosterone enanthate, and to improve the efficiency of extraction and filtration of slurry, by crystallizing crude testosterone enanthate in a mixed solvent comprising specific amounts of water and alcohol.

CONSTITUTION: Crude testosterone enanthate of formula is dissolved in an aliphatic lower alcohol (pref. methanol). The solution is cooled near the crystallization temperature, and mixed with 10W50wt%, pref. 20W30wt%, based on the alcohol, of water, and recrystallized at ≤0°C, pref. ≤-10°C.

USE: A long-acting male hormone for injection.

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Inventors:

KANOU NATSUKI
ITOU KIYOTAKA
FUJIMOTO EIJI

Application Number:

JP7876479A

Publication Date:

January 13, 1981

Filing Date:

June 22, 1979

Export Citation:

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Assignee:

MITSUBISHI CHEM IND

International Classes:

C07J1/00; (IPC1-7): C07J1/00

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