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