Estriol Use of estriol sulfamate prodrug for the treatment of autoimmune diseases Estriol1,3,5(10)-Estratriene-3, 16a,17b-triol;Estra-1,3,5(10)-triene-3,16alpha,17beta-triolMolecular Formula :C18H24O3Molecular Weight 288.38CAS No.: 50-27-1standard: USP30 Estriol