5-Cyano-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetonitrile
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