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