estradiol 17β-sulfate estradiol 17β-sulfate estradiol 17β-sulfate is an estrogen conjugate which is produced from estradiol by sulfation of the c17β hydroxyl group by estrogen sulfotransferases. estradiol 17β-sulfate names iupac name 3-hydroxyestra-1,3,5(10)-trien-17β-yl hydrogen sulfate systematic iupac name (1s,3as,3br,9bs,11as)-7-hydroxy-11a-methyl-2,3,3a,3b,4,5,9b,10,11,11a-decahydro-1h-cyclopentaphenanthren-1-yl hydrogen sulfate other names estra-1,3,5(10)-triene-3,17β-diol 17β-(hydrogen sulfate) identifiers cas number 3233-69-0 3d model (jsmol) interactive image chebi chebi:191192 chemspider 59802 pubchem cid 66429 comptox dashboard (epa) dtxsid50954120 inchi inchi=1s/c18h24o5s/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)23-24(20,21)22/h3,5,10,14-17,19h,2,4,6-9h2,1h3,(h,20,21,22)/t14-,15-,16+,17+,18+/m1/s1key: jsudngpwaxyetn-zbrfxrbcsa-n smiles c12cc3(1cc2os(=o)(=o)o)ccc4=c3c=cc(=c4)o properties chemical formula c18h24o5s molar mass 352.45 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references