AZO COMPOUND OR ITS SALT

摘要

PROBLEM TO BE SOLVED: To provide a new azo compound exhibiting a high color concentration or its salt. SOLUTION: The present invention provides the azo compound represented by formula (I) or its salt. In the formula (I), R1to R4are each independently a hydrogen atom, a saturated aliphatic hydrocarbon group or a carboxyl group. R5to R12are each independently a hydrogen atom, a halogen atom, a saturated aliphatic hydrocarbon group, an alkoxyl group, carboxyl group, sulfo group, sulfamoyl group, or an N-substituted sulfamoyl group. At least one of R13and R14is H, cyano group, carbamoyl group, or an N-substituted carbamoyl group. COPYRIGHT: (C)2009,JPO&INPIT