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