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Clinical data
Other namesMDL-18962; Propargylestrenedione; PED; 10-(2-Propyn-1-yl)estr-4-ene-3,17-dione; 10-Propargylestr-4-ene-3,17-dione
ATC code
  • None
CAS Number
PubChem CID
Chemical and physical data
Molar mass310.437 g·mol−1
3D model (JSmol)

Plomestane (INN, USAN; former developmental code name MDL-18962; also known as propargylestrenedione, PED) is a steroidal, irreversible aromatase inhibitor which was under development by Marion Merrell Dow/Hoechst Marion Russell (now Hoechst AG) as an antineoplastic agent for the treatment of breast cancer.[1][2][3][4][5] It was found to be effective in preclinical studies and was also found to produce few adverse effects in human clinical trials, significantly reducing estrogen levels with a single administration.[5] However, development of the drug for clinical use was halted due to "technical issues" and it was never marketed.[6]

In addition to its activity as an aromatase inhibitor, plomestane has weak androgenic properties.[5]

See also[edit]


  1. ^ Macdonald F (1997). Dictionary of Pharmacological Agents. CRC Press. p. 1635. ISBN 978-0-412-46630-4. Retrieved 19 May 2012.
  2. ^ Morton IK, Hall JM (1999). Concise Dictionary of Pharmacological Agents: Properties and Synonyms. Springer. p. 227. ISBN 978-0-7514-0499-9. Retrieved 20 May 2012.
  3. ^ Lombardi P (June 1995). "The irreversible inhibition of aromatase (oestrogen synthetase) by steroidal compounds". Current Pharmaceutical Design. Bentham Science Publishers. 1: 23–50 (45). Retrieved 20 May 2012.
  4. ^ Kreider RB, Leutholtz BC, Katch FI, Katch VL (2009). Exercise and Sport Nutrition. Exercise & Sport Nutrition. p. 350. ISBN 978-0-9742965-6-2. Retrieved 20 May 2012.
  5. ^ a b c Kelloff GJ, Lubet RA, Lieberman R, et al. (January 1998). "Aromatase inhibitors as potential cancer chemopreventives". Cancer Epidemiology, Biomarkers & Prevention. 7 (1): 65–78. PMID 9456245.
  6. ^ Avendaño C, Menéndez JC (4 June 2008). Medicinal Chemistry of Anticancer Drugs. Elsevier. p. 69. ISBN 978-0-444-52824-7. Retrieved 20 May 2012.