3'-Methyl-4'-amino-4-hydroxydiphenylamine 6219-89-2 C.I. 76565 Kayaku Sulphur Blue RP NSC37093 Phenol, 4-[(4-amino-3-methylphenyl)amino]- Phenol, p-(4-amino-m-toluidino)- Thional Indone Blue RN Ursol Blue Grey OM