2-Chloro-4-(difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine
5-Bromo-4-(chloromethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine
5-Chloro-2-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Chloro-3-(difluoromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine