Injectable Steroid

Testosterone Undecanoate

  • CAS 5949-44-0
  • Formula C30H48O3
  • Half-life 20.9 days (IM) / 5 hours (oral)
  • Detection 3-5 months
Chemical structure of Testosterone Undecanoate
PubChem CID 65157 ↗

Chemical Identity

CAS Number 5949-44-0
IUPAC Name [(8R,9S,10R,13S,14S,17S)-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl] undecanoate
Molecular Formula C30H48O3
Molecular Weight 456.70 g/mol
SMILES CCCCCCCCCCC(=O)O[C@@H]1CC[C@@H]2[C@H]3CCC4=CC(=O)CC[C@]4(C)[C@@H]3CC[C@]12C
InChIKey UDMXHCYOBYRHLE-KVTDHHQDSA-N
Melting Point 60-62 °C
Solubility Practically insoluble in water; soluble in oils, ethanol
Half-life 20.9 days (IM) / 5 hours (oral)

Pharmacological Profile

Anabolic Rating 100
Androgenic Rating 100
Aromatisation Moderate
Hepatotoxicity None
Detection Window 3-5 months

Known trade names

  • Nebido
  • Andriol
  • Aveed
  • Jatenzo

External references

Data sourced from peer-reviewed pharmacological literature and authoritative chemical databases (PubChem, DrugBank, ChEBI). Provided for identification and research reference only — not medical advice.