2-Naphthalenesulfonic acid, 6-((4-amino-2-hydroxyphenyl)azo)-3-((4-((4-((7-((4-amino-2-hydroxyphenyl)azo)-1-hydroxy-3-sulfo-2-naphthalenyl)azo)phenyl)amino)-3-sulfophenyl)azo)-4-hydroxy-, trisodium salt 79057-88-8 EINECS 279-047-6 Trisodium 6-((4-amino-2-hydroxyphenyl)azo)-3-((4-((4-((7-((4-amino-2-hydroxyphenyl)azo)-1-hydroxy-3-sulphonato-2-naphthyl)azo)phenyl)amino)-3-sulphonatophenyl)azo)-4-hydroxynaphthalene-2-sulphonate