1,3,5-Naphthalenetrisulfonic acid, 7-((4-(((2,3-dichloro-6-quinoxalinyl)carbonyl)amino)-5-sulfo-1-naphthalenyl)azo)-, tetrasodium salt 72639-29-3 8-(((2,3-Dichloroquinoxalin-6-yl)carbonyl)amino)-5-((1,3,5-trisulfo-7-naphthyl)azo)-1-naphthalenesulfonic acid, tetrasodium salt EINECS 276-752-0 Tetrasodium 7-((4-(((2,3-dichloro-6-quinoxalinyl)carbonyl)amino)-5-sulphonato-1-naphthyl)azo)naphthalene-1,3,5-trisulphonate