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