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Trenbolone undecanoate, or trenbolone undecylate, is a synthetic injected anabolic–androgenic steroid (AAS) that is a derivative of nandrolone (19-nortestosterone) which was never marketed.[1][2] It is the C17β undecanoate (undecylate) ester and a long-acting prodrug of trenbolone.[1][2] The drug was described by researchers at Roussel Uclaf in 1967 and was the first long-lasting ester of trenbolone to be developed.[1][2] Subsequently, trenbolone hexahydrobenzylcarbonate, a roughly equivalent compound, was developed and approved in Europe for human medical use in 1980, though it was discontinued in 1997.[2] Trenbolone enanthate is another long-lasting ester of trenbolone.[2] Similarly to trenbolone undecanoate, it was never approved for human use, but is sold on the black market for use by bodybuilders and athletes.[2]

See also

References

  1. ^ a b c Mathieu, J (1967). Proceedings of the International Symposium on Drug Research, Montreal, Canada, June 12-14, 1967. Chemical Institute of Canada, Medical Chemistry Group, Montreal, Canada. p. 134.
  2. ^ a b c d e f William Llewellyn (2011). Anabolics. Molecular Nutrition Llc. p. 619. ISBN 978-0-9828280-1-4.

Further reading

  • Yarrow JF, McCoy SC, Borst SE (2010). “Tissue selectivity and potential clinical applications of trenbolone (17beta-hydroxyestra-4,9,11-trien-3-one): A potent anabolic steroid with reduced androgenic and estrogenic activity”. Steroids. 75 (6): 377–89. doi:10.1016/j.steroids.2010.01.019. PMID 20138077. S2CID 205253265.