Testosterone isovalerate

Testosterone isovalerate
Clinical data
Routes of
Intramuscular injection
Synonyms Testosterone isopentanoate; Testosterone 17β-isovalerate; Androst-4-en-17β-ol-3-one 17β-isovalerate
Chemical and physical data
Formula C24H36O3
Molar mass 372.549 g/mol
3D model (Jmol) Interactive image

Testosterone isovalerate, or testosterone isopentanoate, also known as testosterone 17β-isovalerate, as well as androst-4-en-17β-ol-3-one 17β-isovalerate, is a synthetic, injected anabolic-androgenic steroid (AAS) and an androgen ester – specifically, the C17β isovalerate (isopentanoate) 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]

See also


  1. 1 2 Vitamins and Hormones. Academic Press. 1 January 1944. pp. 382–. 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. 3031–. ISBN 978-3-662-25863-7.

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