Clostebol propionate (brand name Yonchlon), also known as 4-chlorotestosterone 17β-propionate or as 4-chloroandrost-4-en-17β-ol-3-one 17β-propionate, is a

synthetic Synthetic things are composed of multiple parts, often with the implication that they are artificial. In particular, 'synthetic' may refer to: Science * Synthetic chemical or compound, produced by the process of chemical synthesis * Synthetic o ...

, injected anabolic-androgenic steroid (AAS) and a derivative of testosterone. It is an androgen ester – specifically, the C17β propionate ester of

clostebol Clostebol (; also known as 4-chlorotestosterone) usually as the ester clostebol acetate, is a synthetic anabolic–androgenic steroid (AAS). Clostebol is the 4- chloro derivative of the natural hormone testosterone. The chlorination prevents c ...

(4-chlorotestosterone) – and acts as a

prodrug A prodrug is a medication or compound that, after intake, is metabolized (i.e., converted within the body) into a pharmacologically active drug. Instead of administering a drug directly, a corresponding prodrug can be used to improve how the drug ...

of clostebol in the body. Clostebol acetate is administered via

intramuscular injection Intramuscular injection, often abbreviated IM, is the injection of a substance into a muscle. In medicine, it is one of several methods for parenteral administration of medications. Intramuscular injection may be preferred because muscles have ...

References

Propionate esters Androgen esters Androgens and anabolic steroids Androstanes Organochlorides Prodrugs World Anti-Doping Agency prohibited substances {{genito-urinary-drug-stub

See also

References