Mesterolone

DescriptionMesterolone (Item No. 21171) is an analytical reference standard categorized as an anabolic androgenic steroid. Formulations containing mesterolone have been used in patients with low testosterone or symptoms of aging male syndrome. Mesterolone cannot be aromatized to estrogens, unlike other androgens. This compound is the active ingredient in different pharmaceutical preparations that have been used medically but have also been widely applied in sports in order to improve athlete performance. Mesterolone is regulated as a Schedule III drug in the United States. This product is intended for research and forensic applications.

UsesMesterolone is a synthetic androgen and a dihydrotestosterone derivative. Mesterolone is rarely used for replacement therapies due to its weak androgenic activity.

General DescriptionMesterolone is a synthetic anabolic-androgenic steroid (AAS) and derivative of dihydrotestosterone (DHT). It is inactivated by 3α-hydroxysteroid dehydrogenase in skeleta muscules so it is considered a weak androgen. It is not a substrate for aromatase so it is not converted into estrogen. Mesterolone demonstrated to have minimal effect on sperm counts and levels of FSH or LH. Experiments of mesterolone serving as a potential treatment of depression are still undergoing.

DefinitionChEBI: Mesterolone is a 3-oxo-5alpha-steroid. It is a structurally altered DHT hormone possessing the addition of a methyl group at the carbon one position. This allows the hormone to survive oral ingestion by protecting it from hepatic breakdown. This is one of the only oral anabolic steroids that is not C17-alpha alkylated (C17-aa) but instead carries the added methyl group.