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