Patent ID: 8167991
Filing Date: 2012-05-01
Classification: C07D,C09B,C09D

Abstract:
1. A trisazo compound represented by the following formula (1) in free acid form: wherein, the group A is a substituted phenyl group and has a substituent selected from the group consisting of a carboxy group, a sulfo group, a chlorine atom, a cyano group, a nitro group, a sulfamoyl group, a C1 to C4 alkyl group, a C1 to C4 alkoxy group which may be substituted by a hydroxy group, a C1 to C4 alkoxy group, a sulfo group or a carboxy group and a C1 to C4 alkylsulfonyl group which may be substituted by a hydroxy group, a sulfo group or a carboxy group; B and C are substituted para-phenylene groups and have a substituent selected from the group consisting of a carboxy group, a sulfo group, a C1 to C4 alkyl group and a C1 to C4 alkoxy group which may be substituted by a hydroxy group, a C1 to C4 alkoxy group, a sulfo group or a carboxy group; R R each of R or a salt thereof.