1-Naphthalenesulfonic acid, 3-((4-(acetylamino)phenyl)azo)-4-amino-5-hydroxy-6-(phenylazo)-, monosodium salt 3-((4-(Acetylamino)phenyl)azo)-4-amino-5-hydroxy-6-(phenylazo)-1-naphthalenesulfonic acid, monosodium salt 71002-19-2 EINECS 275-107-0 Sodium 3-((4-acetamidophenyl)azo)-4-amino-5-hydroxy-6-(phenylazo)naphthalene-1-sulphonate