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