2-Cyano-3-(fluoromethyl)-6-hydroxy-4-(trifluoromethoxy)pyridine
5-(Chloromethyl)-2-cyano-3-hydroxy-6-(trifluoromethoxy)pyridine
4-Cyano-2-fluoro-3-(trifluoromethoxy)pyridine-5-sulfonamide
4-(Chloromethyl)-3-cyano-2-hydroxy-6-(trifluoromethoxy)pyridine