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