estriol acetate benzoate estriol acetate benzoate estriol acetate benzoate (jan) (brand name holin-depot), or oestriol diacetate benzoate (ban), is an estrogen medication. it is an estrogen ester, specifically, an ester of estriol. estriol acetate benzoateclinical datatrade namesholin-depotother namesoestriol diacetate benzoate; estriol 3-benzoate 16,17-diacetateroutes ofadministrationintramuscular injectiondrug classestrogen; estrogen esteridentifiers iupac name phenanthren-3-yl] benzoate cas number2508-47-6pubchem cid656637chemspider16348unii64ey62bbuakeggd01989comptox dashboard (epa)dtxsid8057697 chemical and physical dataformulac29h32o6molar mass476.569 g·mol−13d model (jsmol)interactive image smiles cc(=o)o1c23ccc4=c(3cc2(1oc(=o)c)c)c=cc(=c4)oc(=o)c5=cc=cc=c5 inchi inchi=1s/c29h32o6/c1-17(30)33-26-16-25-24-11-9-20-15-21(35-28(32)19-7-5-4-6-8-19)10-12-22(20)23(24)13-14-29(25,3)27(26)34-18(2)31/h4-8,10,12,15,23-27h,9,11,13-14,16h2,1-3h3/t23-,24-,25+,26-,27+,29+/m1/s1key:vqhgriuwsvcjpx-hszamclrsa-n