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