2-Chloro-4-hydroxy-6-(trifluoromethoxy)pyridine-3-acetonitrile
4-Chloro-5-(chloromethyl)-3-cyano-2-(trifluoromethoxy)pyridine
2-Chloro-4-hydroxy-3-(trifluoromethoxy)pyridine-6-acetonitrile
2-Chloro-3-hydroxy-6-(trifluoromethoxy)pyridine-4-acetonitrile