Oral Steroid

Mesterolone

  • CAS 1424-00-6
  • Formula C20H32O2
  • Half-life 12-13 hours (oral)
  • Detection 5-6 weeks
Chemical structure of Mesterolone
PubChem CID 15020 ↗

Chemical Identity

CAS Number 1424-00-6
IUPAC Name (1R,2R,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-1,2,10,13-tetramethyl-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one
Molecular Formula C20H32O2
Molecular Weight 304.47 g/mol
SMILES C[C@@H]1C[C@]2(C)C(=CC1=O)[C@@H]3CC[C@@H]4[C@H](CC[C@@H]4O)[C@H]3CC2
InChIKey GKJUHUCPSWDNML-UHFFFAOYSA-N
Melting Point 203-205 °C
Solubility Practically insoluble in water; soluble in chloroform, dioxane, ethanol
Half-life 12-13 hours (oral)

Pharmacological Profile

Anabolic Rating 100-150
Androgenic Rating 30-40
Aromatisation None
Hepatotoxicity Low
Detection Window 5-6 weeks

Known trade names

  • Proviron
  • Provironum
  • Mesterolon

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.