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