67990-22-1 Benzoic acid, 5-((4-((6-((4-nitrophenyl)azo)-5-amino-4-hydroxy-2,7-disulfo-3-naphthalenyl)azo)phenyl)azo)-2-hydroxy-, trisodium salt Benzoic acid, 5-((4-((8-amino-1-hydroxy-7-((4-nitrophenyl)azo)-3,6-disulfo-2-naphthalenyl)azo)phenyl)azo)-2-hydroxy-, trisodium salt EINECS 268-045-0 Trisodium 5-((4-((8-amino-1-hydroxy-7-((4-nitrophenyl)azo)-3,6-disulphonato-2-naphthyl)azo)phenyl)azo)salicylate