Diethylstilbestrol dipalmitate

Diethylstilbestrol dipalmitate
Clinical data
Trade names Palmestril, Stilpalmitate
Synonyms Stilpalmitate
CAS Number 6533-53-5
PubChem (CID) 3034511
ChemSpider 2298951
UNII 86291XW83U
Chemical and physical data
Formula C50H80O4
Molar mass 745.180 g/mol
3D model (Jmol) Interactive image

Diethylstilbestrol dipalmitate (brand names Palmestril, Stilpalmitate), also known as stilpalmitate, is a synthetic, non-steroidal estrogen of the stilbestrol group and an ester of diethylstilbestrol (DES) that was formerly marketed but is now no longer available.[1][2] Its actions and uses are essentially the same as those of DES, but it is absorbed more slowly and for this reason has a longer duration of action and improved tolerability in comparison.[3]


  1. J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. p. 397. ISBN 978-1-4757-2085-3.
  2. Hammes B, Laitman CJ (2003). "Diethylstilbestrol (DES) update: recommendations for the identification and management of DES-exposed individuals". J Midwifery Womens Health. 48 (1): 19–29. PMID 12589302.
  3. N.A.R.D. Journal ...: The Official Organ of the National Association of Retail Druggists. National Association of Retail Druggists. 1948. p. 62.

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