4-(Difluoromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-5-acetonitrile
5-(Difluoromethyl)-3-fluoro-4-(trifluoromethoxy)pyridine-2-acetonitrile
Methyl 5-fluoro-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-carboxylate
3-(Difluoromethyl)-5-fluoro-2-(trifluoromethoxy)pyridine-4-acetonitrile