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