2-Nitro-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-6-acetonitrile
3-Nitro-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-2-acetonitrile
3-(Difluoromethyl)-6-nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
3-(Difluoromethyl)-6-nitro-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine