1-Anilino-8-hydroxynaphthalene-4-sulfonic acid 1-Naphthalenesulfonic acid, 5-hydroxy-4-(phenylamino)- 1-Naphthol-5-sulfonic acid, 8-anilino- 5-Hydroxy-4-(phenylamino)naphthalenesulphonic acid 68003-37-2 EINECS 268-120-8