1-Naphthalenesulfonic acid, 5-(2-(4-(2-(2-chlorophenyl)diazenyl)-6(or 7)-sulfo-1-naphthalenyl)diazenyl)-8-(phenylamino)-, sodium salt (1:2);1-Naphthalenesulfonic acid, 5-((4-(2-chlorophenylazo)-6(7)-sulfo-1-naphthyl)azo)-8-(phenylamino)-, disodium salt;1-Naphthalenesulfonic acid, 5-((4-((2-chlorophenyl)azo)-6(or 7)-sulfo-1-naphthalenyl)azo)-8-(phenylamino)-, disodium salt;Disodium 8-anilino-5-((4-((2-chlorophenyl)azo)-6(or 7)-sulphonatonaphthyl)azo)naphthalene-1-sulphonate
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