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