5-Cyano-4-(difluoromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine
3-Cyano-4-(difluoromethyl)-5-fluoro-2-(trifluoromethoxy)pyridine
2-(Chloromethyl)-5-fluoro-4-iodo-3-(trifluoromethoxy)pyridine
3-Cyano-2-(difluoromethyl)-6-fluoro-5-(trifluoromethoxy)pyridine