1-hydroxy-6-(4'-aminobenzoyl)-aminonaphthalene-3-sulphonic acid, p-aminobenzoyl-H-acid, 2-Naphthalenesulfonic acid,7-(p-aminobenzamido)-4-hydroxy, p-Aminobenzoyl J Acid, 2-Naphthalenesulfonic acid,7-[(4-aminobenzoyl)amino]-4-hydroxy, 7-(p-Aminobenzamido)-4-hydroxy-2-naphthalenesulfonic acid, 7-(4-amino-benzoylamino)-4-hydroxy-naphthalene-2-sulfonic acid, p-Aminobenzoyl I Acid, PAB J Acid, 6-(4'-aminobenzoyl)amino-3-sulfonic acid-1-naphthol, 6-(4-Amino-benzamino)-naphthol-(1)-sulfonsaeure-(3), 7-(4-Amino-benzoylamino)-4-hydroxy-naphthalin-2-sulfonsaeure, 7-(4-aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid