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