1,2-Dihydro-6-methyl-1-(3-(trifluoromethyl)phenyl)-3,4-pyridazinedione 146824-74-0 3,4-Pyridazinedione, 1,2-dihydro-6-methyl-1-(3-(trifluoromethyl)phenyl)- m-Trifluoromethyl phenyl-1 dihydro-1,4 hydroxy-3 oxo-4 methyl-6 pyridazine [French]