1,4-Dihydrazino-6-(trifluoromethyl)phthalazine dihydrochloride 24159-21-5 6-Trifluoromethyl-1,4-dihydrazinophthalazine dihydrochloride Phthalazine, 1,4-dihydrazino-6-(trifluoromethyl)-, dihydrochloride