4-Cyano-2-hydroxy-3-(trifluoromethoxy)pyridine-6-acetonitrile
3-Cyano-5-hydroxy-6-(trifluoromethoxy)pyridine-2-acetonitrile
3-Cyano-5-hydroxy-2-(trifluoromethoxy)pyridine-6-acetonitrile
2-(Bromomethyl)-5-(difluoromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine