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