146824-91-1 3-Methoxy-6-methyl-1-(3,4,5-trimethoxyphenyl)-4(1H)-pyridazinone 4(1H)-Pyridazinone, 3-methoxy-6-methyl-1-(3,4,5-trimethoxyphenyl)- Trimethoxy-3,4,5 phenyl-1 dihydro-1,4 oxo-4 methoxy-3 methyl-6 pyridazine [French]