2',4'-Diamino-3-carboxy-2-hydroxy-5-sulpho-5'-((4-((4-nitro-2-sulphophenyl)amino)phenyl)azo)azobenzene 3-((2,4-Diamino-5-((4-(4-nitro-2-sulphoanilino)phenyl)azo)phenyl)azo)-5-sulphosalicylic acid 70660-45-6 Benzoic acid, 3-((2,4-diamino-5-((4-((4-nitro-2-sulfophenyl)amino)phenyl)azo)phenyl)azo)-2-hydroxy-5-sulfo- EINECS 274-725-8