72152-90-0 Benzoic acid, 5-((4-((4-((6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)-7-sulfo-1-naphthalenyl)azo)phenyl)azo)-2-hydroxy-, trisodium salt Benzoic acid, 5-((4-((4-((6-amino-1-hydroxy-3-sulfo-2-naphthyl)azo)-7-sulfo-1-naphthyl)azo)phenyl)azo)-2-hydroxy-, trisodium salt