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