5-Androstenedione, also known as androst-5-ene-3,17-dione, is a prohormone of testosterone. The World Anti-Doping Agency prohibits its use in Sportsperson, athletes. In the United States, it is a controlled substance. 5-Androstenedione is structurally similar to 4-androstenedione, with the exception of the position of a carbon-carbon double bond. 4-Androstenedione is natural product, naturally produced in the body by the adrenal glands and gonads. In addition to testosterone, it is also a precursor (biochemistry), precursor of estrone and estradiol. 5-Androstenedione is on the World Anti-Doping Agency's list of prohibited substances, and is therefore banned from use in most major sports.

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5-Androstenedione
Androgens and anabolic steroids Androstanes Diketones Pregnane X receptor agonists World Anti-Doping Agency prohibited substances {{genito-urinary-drug-stub