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