estradiol dibenzoate estradiol dibenzoate estradiol dibenzoate (edb), also known as estradiol 3,17β-dibenzoate, is an estrogen ester which was developed in the 1930s and was never marketed. it is the c3 and c17β benzoate diester of estradiol. estradiol dibenzoate has a longer duration of action than estradiol benzoate (estradiol 3-benzoate) by depot injection. estradiol dibenzoateclinical dataother namesedb; estradiol 3,17β-dibenzoate; estra-1,3,5(10)-triene-3,17β-diol 3,17β-dibenzoateidentifiers iupac name phenanthren-17-yl] benzoate cas number4147-13-1pubchem cid22796092chemspider18511171unii65w00i5071comptox dashboard (epa)dtxsid70194364 chemical and physical dataformulac32h32o4molar mass480.604 g·mol−13d model (jsmol)interactive image smiles c12cc3(1cc2oc(=o)c4=cc=cc=c4)ccc5=c3c=cc(=c5)oc(=o)c6=cc=cc=c6 inchi inchi=1s/c32h32o4/c1-32-19-18-26-25-15-13-24(35-30(33)21-8-4-2-5-9-21)20-23(25)12-14-27(26)28(32)16-17-29(32)36-31(34)22-10-6-3-7-11-22/h2-11,13,15,20,26-29h,12,14,16-19h2,1h3/t26-,27-,28+,29+,32+/m1/s1key:qsebttylhxqxsf-cahawpiusa-n