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