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