1-(3-Chlorophenyl)-3-methoxy-6-methyl-4(1H)-pyridazinone 146824-85-3 4(1H)-Pyridazinone, 1-(3-chlorophenyl)-3-methoxy-6-methyl- m-Chloro phenyl-1 dihydro-1,4 oxo-4 methoxy-3 methyl-6 pyridazine [French]