Ethyl 3-cyano-5-(fluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 3-fluoro-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-carboxylate
Ethyl 5-cyano-4-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 6-cyano-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate