5-Cyano-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
5-Chloro-3-(difluoromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine
5-Chloro-4-(difluoromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine
5-Chloro-2-iodo-4-(trifluoromethoxy)pyridine-3-sulfonamide