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