2-Naphthalenesulfonic acid, 4-hydroxy-7-((((5-hydroxy-6-((2-methoxy-5-methyl-4-sulfophenyl)azo)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-((2-methoxyphenyl)azo)-, trisodium salt 4-Hydroxy-7-((((5-hydroxy-6-((2-methoxyphenyl)azo)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-((2-methoxy-5-methyl-4-sulfophenyl)azo)-2-naphthalenesulfonic acid, trisodium salt 67923-63-1 EINECS 267-779-9 Trisodium 4-hydroxy-7-((((5-hydroxy-6-((2-methoxy-5-methyl-4-sulphonatophenyl)azo)-7-sulphonato-2-naphthyl)amino)carbonyl)amino)-3-((2-methoxyphenyl)azo)naphthalene-2-sulphonate