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