3(2H)-Pyridazinone, 6-(3,5-dimethyl-1H-pyrazol-1-yl)-, hydrazone 3-Hydrazino-6-(3,5-dimethyl-1-pyrazolyl)pyridazine 5-25-17-00457 (Beilstein Handbook Reference) 6-(3,5-Dimethyl-1H-pyrazol-1-yl)-3(2H)-pyridazinone hydrazone 70589-04-7 BRN 0792777