Ethinylestradiol benzoate

From Wikipedia, the free encyclopedia
Ethinylestradiol benzoate
Ethinylestradiol benzoate.svg
Clinical data
Other names17α-Ethynylestradiol 3-benzoate
Drug classEstrogen; Estrogen ester
  • [(8R,9S,13S,14S,17R)-17-ethynyl-17-hydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] benzoate
PubChem CID
Chemical and physical data
Molar mass400.518 g·mol−1
3D model (JSmol)
  • C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)CCC4=C3C=CC(=C4)OC(=O)C5=CC=CC=C5
  • InChI=1S/C27H28O3/c1-3-27(29)16-14-24-23-11-9-19-17-20(30-25(28)18-7-5-4-6-8-18)10-12-21(19)22(23)13-15-26(24,27)2/h1,4-8,10,12,17,22-24,29H,9,11,13-16H2,2H3/t22-,23-,24+,26+,27+/m1/s1

Ethinylestradiol benzoate, or 17α-ethynylestradiol 3-benzoate, is a synthetic estrogen and estrogen ester – specifically, the C3 benzoate ester of ethinylestradiol – which was first described in the late 1930s and was never marketed.[1][2]

See also[edit]


  1. ^ Elks J (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 522–. ISBN 978-1-4757-2085-3.
  2. ^ Frobenius W (2011). ""The Rabbits are Prepared ..." - The Development of Ethinylestradiol and Ethinyltestosterone" (PDF). J Reprod Med Endo. 8 (suppl. 1): 32–57.