4-Fluoro-3-nitro-6-(trifluoromethoxy)pyridine-2-acetonitrile
4-Fluoro-3-nitro-2-(trifluoromethoxy)pyridine-6-acetonitrile
4-Fluoro-3-(fluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine
2-Fluoro-5-(fluoromethyl)-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine