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