2-Naphthalenesulfonic acid, 5-((4-(acetylamino)-2-sulfophenyl)azo)-6-amino-4-hydroxy- 25317-34-4 5-((4-(Acetylamino)-2-sulfophenyl)azo)-6-amino-4-hydroxy-2-naphthalensulfonic acid 5-((4-Acetamido-2-sulphonatophenyl)azo)-6-amino-4-hydroxynaphthalene-2-sulphonic acid EINECS 246-825-1