Ethyl 4-(chloromethyl)-3-cyano-2-(trifluoromethoxy)pyridine-5-acetate
Ethyl 2-cyano-6-(fluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetate
3-Cyano-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-acetonitrile
3-Cyano-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetonitrile