1-Naphthalenesulfonic acid, 4-hydroxy-3-((4-methyl-3-((phenylamino)sulfonyl)phenyl)azo)-, monosodium salt 3058-98-8 58206-16-9 84842-88-6 EINECS 221-298-0 Sodium 4-hydroxy-3-((3-(phenylsulphamoyl)-p-tolyl)azo)naphthalenesulphonate