83949-44-4 | disodium hydrogen 4-[[4-[[[(5-hydroxy-7-sulphonato-2-naphthyl)amino]carbonyl]amino]-5-methoxy-o-tolyl]azo]-5-[(phenylsulphonyl)oxy]naphthalene-2,7-disulphonate | disodium hydrogen 4-[[4-[[[(5-hydroxy-7-sulphonato-2-naphthyl)amino]carbonyl]amino]-5-methoxy-o-tolyl]azo]-5-[(phenylsulphonyl)oxy]naphthalene-2,7-disulphonate |