1-Naphthalenesulfonic acid, 6,8-bis(phenylamino)- 1-Naphthalenesulfonic acid, 6,8-dianilino- 129-93-1 6,8-Dianilino-1-naphthalenesulfonic acid 6,8-Diphenylamino-1-naphthalenesulfonic acid Diphenyl Epsilon Acid Epsilon acid, diphenyl- NSC7225