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