To provide a monoazo compound which has a high dyeing property for cellulosic fibers and can efficiently dye the cellulosic fibers in good reproducability, and to provide a dyeing method.

This monoazo compound represented by general formula (1) [R1 is H or methoxy; R2 is H, methyl, methoxy, ureido or acetylamino; A is a group represented by general formula (2) or (3)] in the form of the free acid.