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