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