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