2-Cyano-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-5-acetonitrile
3-Hydroxy-4-iodo-2-(trifluoromethoxy)pyridine-5-acetonitrile
3-Hydroxy-2-iodo-4-(trifluoromethoxy)pyridine-5-acetonitrile
6-Hydroxy-2-iodo-4-(trifluoromethoxy)pyridine-3-acetonitrile