4-Cyano-2-(difluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine-2-methanol
5-Cyano-3-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-5-methanol