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