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