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