72269-59-1 Benzenesulfonic acid, 4-(acetylamino)-2-((2-hydroxy-3-(((2-methoxyphenyl)amino)carbonyl)-1-naphthalenyl)azo)-, monosodium salt EINECS 276-556-5 N-Acetyl-2-((2-hydroxy-3-((2-methoxyphenyl)carbamoyl)-1-naphthyl)azo)sulfanilic acid, sodium salt Sodium N-acetyl-2-((2-hydroxy-3-((2-methoxyanilino)carbonyl)-1-naphthyl)azo)sulphanilate