Synonyms: Chromate(2-), (3-(hydroxy-kappaO)-4-(2-(2-(hydroxy-kappaO)-1-naphthalenyl)diazenyl-kappaN1)-7-nitro-1-naphthalenesulfonato(3-))(N-(7-(hydroxy-kappaO)-8-(2-(2-(hydroxy-kappaO)-5-nitrophenyl)diazenyl-kappaN1)-1-naphthalenyl)acetamidato(2-))-, sodium (1:2);Chromate(2-), (3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))(N-(7-hydroxy-8-((2-hydroxy-5-nitrophenyl)azo)-1-naphthalenyl)acetamidato(2-))-, disodium;Chromate(2-), (3-(hydroxy-kappaO)-4-((2-(hydroxy-kappaO)-1-naphthalenyl)azo-kappaN1)-7-nitro-1-naphthalenesulfonato(3-))(N-(7-(hydroxy-kappaO)-8-((2-(hydroxy-kappaO)-5-nitrophenyl)azo-kappaN1)-1-naphthalenyl)acetamidato(2-))-, disodium;Chromate(2-), (3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))(N-(7-hydroxy-8-((2-hydroxy-5-nitrophenyl)azo)-1-naphthalenyl)acetamidato(2-)) -, disodium;Disodium (3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitronaphthalene-1-sulphonato(3-))(N-(7-hydroxy-8-((2-hydroxy-5-nitrophenyl)azo)-1-naphthyl)acetamidato(2-))chromate(2-)