Estradiol mustard

Estradiol mustard
Synonyms NSC-112259; Chlorphenacyl estradiol diester
CAS Number 22966-79-6
PubChem (CID) 31586
ChemSpider 29294
Chemical and physical data
Formula C42H50Cl4N2O4
Molar mass 788.6694 g/mol
3D model (Jmol) Interactive image

Estradiol mustard (developmental code name NSC-112259), also known as chlorphenacyl estradiol diester, as well as estradiol 3,17β-bis(4-(bis(2-chloroethyl)amino)phenyl)acetate, is a synthetic, steroidal estrogen and alkylating antineoplastic agent and a nitrogen mustard-coupled estrogen ester that was never marketed.[1] It is selectively distributed into estrogen receptor (ER)-positive tissues such as ER-expressing tumors like those seen in breast and prostate cancers.[2] For this reason, estradiol mustard and other cytostatic-linked estrogens like estramustine have reduced toxicity relative to non-linked nitrogen mustard alkylating antineoplastic agents.[2] However, they may stimulate breast tumor growth due to their inherent estrogenic activity and are said to be devoid of major therapeutic efficacy in breast cancer,[3] although estramustine has been approved for and is used (almost exclusively) in the treatment of prostate cancer.[4]

See also


  1. J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 898–. ISBN 978-1-4757-2085-3.
  2. 1 2 Asai M, Takeuchi H, Okada H (1978). "In vivo interaction between steroidal alkylating agents and oestrogen receptors in rabbit uteri". Acta Endocrinol. 87 (1): 173–80. PMID 579532.
  3. V. H. T. James; J. R. Pasqualini (22 October 2013). Hormonal Steroids: Proceedings of the Sixth International Congress on Hormonal Steroids. Elsevier Science. pp. 75–. ISBN 978-1-4831-9067-9.
  4. Richard J. Ablin; Malcolm D. Mason (5 September 2007). Metastasis of Prostate Cancer. Springer Science & Business Media. pp. 311–. ISBN 978-1-4020-5847-9.

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