83232-38-6 3-[[4-(acetamido)phenyl]azo]-5-amino-4-hydroxy-6-[[4-[2-[4-[(4-methoxyphenyl)azo]-2-sulphophenyl]vinyl]-3-sulphophenyl]azo]naphthalene-2,7-disulphonic acid, ammonium sodium salt
83221-77-6 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7-sulpho-2-naphthyl]amino]carbonyl]amino]-3-sulpho-2-naphthyl]azo]naphthalene-1-sulphonic acid, sodium salt
83221-78-7 4-[[1-hydroxy-6-[[[[5-hydroxy-6-[(2-methoxyphenyl)azo]-7-sulpho-2-naphthyl]amino]carbonyl]amino]-3-sulpho-2-naphthyl]azo]naphthalene-1-sulphonic acid, sodium salt