2-(Chloromethyl)-5-fluoro-3-nitro-6-(trifluoromethoxy)pyridine
2-Cyano-4-hydroxy-6-(trifluoromethoxy)pyridine-3-sulfonamide
4-(Bromomethyl)-2-fluoro-3-nitro-6-(trifluoromethoxy)pyridine
5-Cyano-2-hydroxy-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride