Ethyl 4-(difluoromethyl)-5-fluoro-3-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 4-(difluoromethyl)-3-fluoro-2-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 4-(difluoromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine-2-carboxylate
3-(Difluoromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-6-acetonitrile