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