2-Fluoro-5-methoxy-3-(trifluoromethoxy)pyridine-6-acetonitrile
4-Cyano-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine-2-acetonitrile
2-Fluoro-4-methoxy-6-(trifluoromethoxy)pyridine-3-acetonitrile
4-Cyano-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetonitrile