146824-86-4 3-Methoxy-6-methyl-1-(3-methylphenyl)-4(1H)-pyridazinone 4(1H)-Pyridazinone, 3-methoxy-6-methyl-1-(3-methylphenyl)- m-Tolyl-1 dihydro-1,4 oxo-4 methoxy-3 methyl-6 pyridazine [French]