3(2H)-Pyridazinone, 6-(3,5-diethyl-1H-pyrazol-1-yl)-, hydrazone 3-Hydrazino-6-(3,5-diethyl-1-pyrazolyl)-pyridazine 5-25-17-00458 (Beilstein Handbook Reference) 6-(3,5-Diethyl-1H-pyrazol-1-yl)-3(2H)-pyridazinone hydrazone 70589-08-1 BRN 0799595