119-77-7 2-Naphthalenesulfonic acid, 7-((4-aminobenzoyl)amino)-4-hydroxy- 2-Naphthalenesulfonic acid, 7-(p-aminobenzamido)-4-hydroxy- (8CI) 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulphonic acid 7-(p-Aminobenzamido)-4-hydroxy-2-naphthalenesulfonic acid EINECS 204-350-7 NSC 1742 PAB J Acid p-Aminobenzoyl I Acid p-Aminobenzoyl J Acid