6-Cyano-3-(difluoromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine
3-Cyano-2-methoxy-4-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Cyano-5-hydroxy-3-(trifluoromethoxy)pyridine-2-methanol
2-Cyano-5-(difluoromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine