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