Estrone benzoate

Estrone benzoate
Clinical data
Other namesKetohydroxyestrin benzoate; Estra-1,3,5(10)-trien-3-ol-17-one 3-benzoate
Routes of
administration
Intramuscular injection
Drug classEstrogen; Estrogen ester
Identifiers
  • [(8R,9S,13S,14S)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] benzoate
CAS Number
PubChem CID
ChemSpider
UNII
ChEMBL
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC25H26O3
Molar mass374.480 g·mol−1
3D model (JSmol)
  • C[C@]12CC[C@H]3[C@H]([C@@H]1CCC2=O)CCC4=C3C=CC(=C4)OC(=O)C5=CC=CC=C5
  • InChI=1S/C25H26O3/c1-25-14-13-20-19-10-8-18(28-24(27)16-5-3-2-4-6-16)15-17(19)7-9-21(20)22(25)11-12-23(25)26/h2-6,8,10,15,20-22H,7,9,11-14H2,1H3/t20-,21-,22+,25+/m1/s1
  • Key:HKUKRSLIEVXDMS-APDHKMKFSA-N

Estrone benzoate, or estrone 3-benzoate, is a synthetic estrogen and estrogen ester – specifically, the C3 benzoate ester of estrone – which was first reported in 1932 and was never marketed. It led to the development in 1933 of the more active estradiol benzoate, the first estradiol ester to be introduced for medical use.