23576-24-1 3(2H)-Pyridazinone, 5-amino-4-chloro-2-(3-(trifluoromethyl)phenyl)- 4-Chloro-5-amino-2-(alpha,alpha,alpha-trifluoro-meta-tolyl)-3(2H)-pyridazinone Desmethylnorflurazon N-Demethylnorflurazone N-Desmethylnorflurazon