3(2H)-Pyridazinone, 6-(2-methyl-1H-imidazol-1-yl)-, (1-methylethylidene)hydrazine 3-(Isopropylidenehydrazino)-6-(2-methyl-1-imidazolyl)pyridazine 75792-85-7 Acetone, 2-(6-(2-methyl-1-imidazolyl)-6-pyridazinyl)hydrazone