1080-85-9 3(2H)-Pyridazinone, 4-chloro-2-methyl-5-(4-morpholinyl)- 3(2H)-Pyridazinone, 4-chloro-2-methyl-5-morpholino- 4-Chloro-2-methyl-5-morpholino-3(2H)-pyridazinone BRN 0534014