Wiktionary
n. An anabolic steroid with strong androgenic properties.
Wikipedia
Fluoxymesterone (brand names Halotestin, Ultandren) is an anabolic steroid with strong androgenic properties that has been used in the treatment of male hypogonadism, delayed puberty in males, and in the treatment of breast neoplasms in women. It is approximately 5 times as potent as testosterone. The antitumor activity of fluoxymesterone appears related to reduction or competitive inhibition of prolactin receptors or estrogen receptors or production. Dissimilar to testosterone, halotestin has a 100% bioavailability, as the methylation of the 17α-position in halotestin inhibits hepatic metabolism by enzymatic oxidation of 17β-hydroxyl, allowing its absorption into the bloodstream for transport around the body. While there are many legitimate pharmaceutical applications of halotestin, it is also abused, leading to the development of analytical techniques by which halotestin doping can be identified.
Like many C-17 alpha alkylated steroids, fluoxymesterone has poor binding to the androgen receptor. Even so, its actions are mediated by the androgen receptor, most-likely due to its prolonged plasma half-life which is approximately 9.2 hours.
Usage examples of "fluoxymesterone".
The active ingredient contained forty-six molecules, including a slight molecular variation of a steroid, fluoxymesterone, a hormonelike compound which Chris had never seen in a plant beforewhat he named tabulone.