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