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