Clinical data
Trade names Honvan
AHFS/ International Drug Names
ATC code L02AA04 (WHO)
Legal status
Legal status
  • ℞ (Prescription only)
CAS Number 13425-53-1 N
PubChem (CID) 3032325
ChemSpider 2297327 YesY
KEGG D00946 YesY
ECHA InfoCard 100.007.573
Chemical and physical data
Formula C18H22O8P2
Molar mass 428.310 g/mol
3D model (Jmol) Interactive image
 NYesY (what is this?)  (verify)

Fosfestrol (INN, BAN, JAN) (brand names Honvan, Difostilben, Fosfostilben, Fostrolin, Stilbol, Stilphostrol, Vagestrol, among others), also known as diethylstilbestrol diphosphate (USAN), abbreviated as DESDP or DESP, is a synthetic, non-steroidal estrogen of the stilbestrol group that is or has been used in the treatment of prostate cancer.[1][2] It is a prodrug of diethylstilbestrol.[3] The drug has been marketed widely throughout the world, including in the United States, Canada, Europe, Hong Kong, and Mexico.[1]

See also


  1. 1 2 Index Nominum 2000: International Drug Directory. Taylor & Francis. January 2000. pp. 332–. ISBN 978-3-88763-075-1.
  2. Shanbhag (1 January 2008). Pharmacology: Prep Manual for Undergraduates. Elsevier India. pp. 463–. ISBN 978-81-312-1153-3.
  3. Urotext (1 January 2001). Urotext-Luts: Urology. Urotext. pp. 386–. ISBN 978-1-903737-03-3.

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