3-Cyano-2-(difluoromethyl)-4-nitro-5-(trifluoromethoxy)pyridine
Methyl 4-cyano-3-(fluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetate
Ethyl 5-cyano-2-methyl-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 4-cyano-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-3-acetate