1-Naphthalenesulfonic acid, 8-[(4-methylphenyl)amino]- 1-Naphthalenesulfonic acid, 8-p-toluidino- 129-90-8 8-[(4-Methylphenyl)amino]-1-naphthalenesulfonic acid 8-p-Toluidino-1-naphthalenesulfonic acid NSC37181 Tolyl Peri acid