104-23-4 2-16-00-00168 (Beilstein Handbook Reference) 2491-71-6 4'-Aminoazobenzene-4-sulfonic acid 4'-Aminoazobenzene-4-sulphonic acid 4'-Sulfo-4-aminoazobenzene 4-(4-Aminophenylazo)benzenesulfonic acid 4-(4-Sulfophenylazo)aniline 4-Aminoazobenzene-4'-sulphonic acid 85187-24-2 Aminoazobenzenesulfonic acid BENZENESULFONIC ACID, 4- (4-AMINOPHENYL)AZO - BRN 0753101 Benzenesulfonic acid, 4-((4-aminophenyl)azo)- Benzenesulfonic acid, p-((p-aminophenyl)azo)- C.I. 13011 (Free acid) C.I. Food Yellow 6 C.I. Food Yellow 6 (VAN) EINECS 203-187-9 NSC 4704 p-((p-Aminophenyl)azo)benzenesulfonic acid