2-Naphthalenesulfonic acid, 7-amino-3-((2,5-dimethoxy-4-((7-sulfo-4-((2-sulfophenyl)azo)-1-naphthalenyl)azo)phenyl)azo)-4-hydroxy-8-((3-sulfophenyl)azo)-, tetrasodium salt 70210-35-4 EINECS 274-432-5 Tetrasodium 7-amino-3-((2,5-dimethoxy-4-((7-sulphonato-4-((2-sulphonatophenyl)azo)naphthyl)azo)phenyl)azo)-4-hydroxy-8-((3-sulphonatophenyl)azo)naphthalene-2-sulphonate