2-Morpholinoethyl-4,5-dichloro-3(2H)-pyridazinone hydrochloride 3(2H)-Pyridazinone, 4,5-dichloro-2-(2-(4-morpholinyl)ethyl)-, monohydrochloride 4,5-Dichloro-2-(2-(4-morpholinyl)ethyl)-3(2H)-pyridazinone monohydrochloride 65225-82-3