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