Testosterone stearate

Testosterone stearate
Clinical data
Routes of
Oral, intramuscular injection
Synonyms Testosterone octadecanoate; Testosterone 17β-stearate; Androst-4-en-17β-ol-3-one 17β-stearate
PubChem (CID) 57463467
Chemical and physical data
Formula C37H62O3
Molar mass 554.9 g/mol
3D model (Jmol) Interactive image

Testosterone stearate, or testosterone octadecanoate, also known as testosterone 17β-stearate, as well as androst-4-en-17β-ol-3-one 17β-stearate, is an injected anabolic-androgenic steroid (AAS) and an androgen ester – specifically, the C17β stearate (octadecanoate) ester of testosterone – which was never marketed.[1][2] It is a prodrug of testosterone and, when administered via intramuscular injection, is associated with a long-lasting depot effect and extended duration of action.[1] Testosterone stearate may occur naturally in the body.[3]

It has been said that with longer-chain esters of testosterone like testosterone stearate, the duration of action may be so protracted that the magnitude of effect with typical doses may be too low to be appreciable.[1]

See also


  1. 1 2 3 Vitamins and Hormones. Academic Press. 1 January 1944. pp. 384–. ISBN 978-0-08-086599-7.
  2. Edith Josephy; F. Radt (1 December 2013). Elsevier’s Encyclopaedia of Organic Chemistry: Series III: Carboisocyclic Condensed Compounds. Springer. pp. 3048–. ISBN 978-3-662-25863-7.
  3. Michael Oettel; Ekkehard Schillinger (6 December 2012). Estrogens and Antiestrogens I: Physiology and Mechanisms of Action of Estrogens and Antiestrogens. Springer Science & Business Media. pp. 236–. ISBN 978-3-642-58616-3.

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