4-Chloro-3-hydroxy-2-(trifluoromethoxy)pyridine-5-sulfonamide
2-Chloro-3-(difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine
3-Chloro-4-(chloromethyl)-5-iodo-2-(trifluoromethoxy)pyridine
2-Chloro-3-(difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine