5-Methyl-2-(2-morpholinoethyl)-6-phenyl-3(2H)-pyridazinone 5-METHYL-6-PHENYL-2H-PYRIDAZIN-3-ONE AG 257 (2-MORPHOLIN-4-YL-ETHYL)-HYDRAZINE 5-Methyl-3(2H)-pyridazinone 4-METHYL-3(2H)-PYRIDAZINONE 2-METHYL-6-PHENYLPYRIDAZIN-3(2H)-ONE Cetohexazine AG 279