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Clinical data
ATC code
  • None
  • (4Z)-2-Fluoro-4-(5-hydroxy-7-vinyl-1,3-benzoxazol-2(3H)-ylidene)-2,5-cyclohexadien-1-one
CAS Number
PubChem CID
ECHA InfoCard100.222.969 Edit this at Wikidata
Chemical and physical data
Molar mass271.247 g·mol−1
3D model (JSmol)
  • O=C3\C=C/C(=C2/Oc1c(cc(O)cc1N2)\C=C)/C=C3/F
  • InChI=1S/C15H10FNO3/c1-2-8-5-10(18)7-12-14(8)20-15(17-12)9-3-4-13(19)11(16)6-9/h2-7,17-18H,1H2/b15-9-

Prinaberel (INN, USAN) (developmental code names ERB-041, WAY-202041) is a synthetic, nonsteroidal, and highly selective agonist of the ERβ subtype of the estrogen receptor.[1] It is used in scientific research to elucidate the role of the ERβ receptor.[2] Studies have indicated that selective ERβ agonists like prinaberel could be useful in the clinical treatment of a variety of medical conditions including inflammatory bowel disease, rheumatoid arthritis, endometriosis, and sepsis.[3] Accordingly, prinaberel either was or still is under investigation by Wyeth for the treatment of some of these conditions.[4]

See also[edit]


  1. ^ Harris HA, Albert LM, Leathurby Y, et al. (October 2003). "Evaluation of an estrogen receptor-beta agonist in animal models of human disease". Endocrinology. 144 (10): 4241–9. doi:10.1210/en.2003-0550. PMID 14500559.
  2. ^ Koehler KF, Helguero LA, Haldosén LA, Warner M, Gustafsson JA (May 2005). "Reflections on the discovery and significance of estrogen receptor beta". Endocrine Reviews. 26 (3): 465–78. doi:10.1210/er.2004-0027. PMID 15857973.
  3. ^ Harris HA (2006). "Preclinical characterization of selective estrogen receptor beta agonists: new insights into their therapeutic potential". Ernst Schering Foundation Symposium Proceedings. 2006/1 (1): 149–61. doi:10.1007/2789_2006_021. ISBN 978-3-540-49547-5. PMID 17824176.
  4. ^ "Prinaberel - Wyeth phase change II, USA (endometriosis)". R & D Focus Drug News. 2006-06-05. Archived from the original on 2016-03-07. Retrieved 2012-05-20.

External links[edit]