1,2-Ethanediamine, N-(4-methyl-6-phenyl-3-pyridazinyl)-, dihydrochloride, hemihydrate 118269-73-1 3-((Aminoethyl)amino)-4-methyl-6-phenylpyridazine dihydrochloride hemihydrate CM 30099 N-(4-Methyl-6-phenyl-3-pyridazinyl)-1,2-ethanediamine dihydrochloride hemihydrate