4-Cyano-3-(fluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine
4-Cyano-6-(fluoromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine
2-Fluoro-5-hydroxy-3-nitro-6-(trifluoromethoxy)pyridine
2-Cyano-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetonitrile