|ATC code||G03CA57 (WHO)|
|Chemical and physical data|
|Molar mass||270.36608 g/mol|
|3D model (Jmol)||Interactive image|
17α-Dihydroequilin, or α-dihydroequilin, also known as 7-dehydro-17α-estradiol, as well as estra-1,3,5(10),7-tetraen-3,17α-diol, is a naturally occurring, steroidal estrogen found in horses that is closely related to equilin, equilenin, and 17α-estradiol. The compound, as the 3-sulfate ester sodium salt, is present in conjugated equine estrogens (Premarin), a pharmaceutical extract of the urine of pregnant mares, and is the third highest quantity constituent in the formulation (13.8%).
- Marc A. Fritz; Leon Speroff (28 March 2012). Clinical Gynecologic Endocrinology and Infertility. Lippincott Williams & Wilkins. pp. 751–. ISBN 978-1-4511-4847-3.
- IARC Working Group on the Evaluation of Carcinogenic Risks to Humans; World Health Organization; International Agency for Research on Cancer (2007). Combined Estrogen-progestogen Contraceptives and Combined Estrogen-progestogen Menopausal Therapy. World Health Organization. pp. 378–. ISBN 978-92-832-1291-1.