2',3-dimethyl-4-amino-4'-sulfoazobenzene

6-[(4-amino-m-tolyl)azo]toluene-3-sulphonic acid

4'-Amino-2,3'-dimethylazobenzene-4-sulfonic acid

4-(4-amino-3-methyl-phenyl)azo-3-methyl-benzenesulfonic acid

4-(4-amino-3-methylphenyl)diazenyl-3-methylbenzenesulfonic acid

4-(4-azanyl-3-methyl-phenyl)diazenyl-3-methyl-benzenesulfonic acid