3-Nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-5-acetonitrile
2-Nitro-6-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-acetonitrile
2-Nitro-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-acetonitrile
3-(Difluoromethyl)-5-nitro-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine