2-Chloro-3-hydroxy-4-(trifluoromethoxy)pyridine-5-sulfonamide
5-Chloro-3-cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine
3-Chloro-6-hydroxy-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Chloro-5-cyano-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine