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What is 19-Nor-5-androstenedione?

  • It is a prohormone which has the potential to affect bodily levels of testosterone once metabolized in vivo. It is regulated in the United States as a schedule III controlled substance, and prohibited by the World Anti-Doping Agency for use in competitive sports [1].
  • IUPAC Name: (8R,9S,10R,13S,14S)-13-methyl-1,2,4,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-dione
  • InChI: InChI=1S/C18H24O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h2,13-16H,3-10H2,1H3/t13-,14+,15+,16-,18-/m0/s1
  • Canonical SMILES: CC12CCC3C4CCC(=O)CC4=CCC3C1CCC2=O
  • Isomeric SMILES: C[C@]12CC[C@@H]3[C@H]4CCC(=O)CC4=CC[C@H]3[C@@H]1CCC2=O
  • Molecular formula: C18H24O2
  • Molecular weight: 272.4 g·mol−1
  • PubChem CID: 18633059
  • Synonyms:
  1. Estr-5-ene-3,17-dione
  2. 19289-77-1
  3. UNII-585LQ9KZN8
  4. 585LQ9KZN8
  5. 19-Norandrost-5-ene-3,17-dione
  6. (8R,9S,10R,13S,14S)-13-methyl-1,2,4,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-dione
  7. EINECS 242-943-2
  8. SCHEMBL4432080
  9. AKOS015961313
  10. DB01443
  11. AC-28723
  12. J-012488
  13. Q27261563



  1. 19-Nor-5-androstenedione, Drug bank [1]
  2. National Center for Biotechnology Information (2021). PubChem Compound Summary for CID 18633059, Estr-5-ene-3,17-dione. Retrieved August 8, 2021 from [2].


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