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