4-Cyano-2-(difluoromethyl)-6-hydroxy-3-(trifluoromethyl)pyridine
2-Cyano-3-(difluoromethyl)-4-methylpyridine-6-sulfonyl chloride
3-Cyano-5-(difluoromethyl)-2-hydroxy-6-(trifluoromethyl)pyridine
2-Cyano-5-(difluoromethyl)-3-hydroxy-6-(trifluoromethyl)pyridine