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