2-Hydroxy-8-(methylsulfonamido)-1-((2-hydroxy-4-sulfamylphenyl)azo)naphthalene 2-Hydroxy-8-N-(methylsulfonamido)-1-((2-hydroxy-4-sulfamylphenyl)azo)naphthalene 3-Hydroxy-4-((2-hydroxy-8-((methylsulphonyl)amino)-1-naphthyl)azo)benzenesulphonamide 67892-97-1 Benzenesulfonamide, 3-hydroxy-4-((2-hydroxy-8-((methylsulfonyl)amino)-1-naphthalenyl)azo)- EINECS 267-599-0