3(2H)-Pyridazinone, 6-phenyl-2-(piperidinomethyl)-, methylbromide 35451-75-3 N-Methyl-N-((3-oxo-6-phenyl-2-pyridazinyl)methyl)piperidinium bromide Piperidinium, 1-methyl-1-((3-oxo-6-phenyl-2-pyridazinyl)methyl)-, bromide