Synonyms : 3, 3'-Dimethoxybenzidine, Dianisidine Dihydrochloride, Dianisidine Hydrochloride, Dianisidine Sulfate, O-Dianisidine, 3, 3' Dimethoxybenzidine, Dihydrochloride, Dianisidine, Hydrochloride, Dianisidine, O Dianisidine, Sulfate, Dianisidine