3β-Hydroxytibolone (developmental code name ORG-30126) is a synthetic steroidal

estrogen Estrogen or oestrogen is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics. There are three major endogenous estrogens that have estrogenic hormonal ac ...

which was never marketed. Along with 3α-hydroxytibolone and δ⁴-tibolone, it is a major

active metabolite An active metabolite is an active form of a drug after it has been processed by the body. Metabolites of drugs An active metabolite results when a drug is metabolized by the body into a modified form which continues to produce effects in the body ...

tibolone Tibolone, sold under the brand name Livial among others, is a medication which is used in menopausal hormone therapy and in the treatment of postmenopausal osteoporosis and endometriosis. The medication is available alone and is not formulated ...

, and 3α-hydroxytibolone and 3β-hydroxytibolone are thought to be responsible for the

ic activity of tibolone.

References

Abandoned drugs Alkene derivatives Ethynyl compounds Diols Estranes Human drug metabolites Synthetic estrogens {{Steroid-stub