4, 4' -Diazidostilbene-2, 2' -disulfonic Acid Disodium Salt Tetrahydrate Product Name:4, 4' -Diazidostilbene-2, 2' -disulfonic Acid Disodium Salt Tetrahydrate Molecular Formula: C14H10N6O6S2·2Na Molecular Weight:538.41 CAS:2718-90-3