CAS Number 517-09-9 N
PubChem (CID) 444865
DrugBank DB03515 YesY
ChemSpider 392668 YesY
KEGG C14303 YesY
Chemical and physical data
Formula C18H18O2
Molar mass 266.339 g/mol
3D model (Jmol) Interactive image
 NYesY (what is this?)  (verify)

Equilenin, also known as 6,8-didehydroestrone, as well as estra-1,3,5(10),6,8-pentaen-3-ol-17-one, is an estrogenic steroid hormone obtained from the urine of pregnant mares.[1] It is used as one of the components in Premarin.[1] It was the first complex natural product to be successfully, fully synthesized in 1940 by Alfred L. Wilds.

See also


  1. 1 2 Marc A. Fritz; Leon Speroff (28 March 2012). Clinical Gynecologic Endocrinology and Infertility. Lippincott Williams & Wilkins. pp. 751–. ISBN 978-1-4511-4847-3.

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