6-Chloro-3-fluoro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-Cyano-3-(difluoromethyl)-5-fluoro-4-(trifluoromethoxy)pyridine
2-Chloro-5-fluoro-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Cyano-2-fluoro-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine