5-Cyano-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-acetonitrile
3-Cyano-2-(difluoromethyl)-6-(trifluoromethyl)pyridine-4-acetonitrile
3-(Difluoromethyl)-6-fluoro-2-hydroxy-4-(trifluoromethyl)pyridine
2-(Difluoromethyl)-5-fluoro-6-hydroxy-3-(trifluoromethyl)pyridine