Clinical data
Trade names Andoron, Notandron
AHFS/ International Drug Names
  • US: X (Contraindicated)
Routes of
ATC code none
Legal status
Legal status
Pharmacokinetic data
Bioavailability 99% oral
Protein binding yes
Metabolism Hepatic
Biological half-life ?
Excretion Renal
Synonyms (5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-10,13,17-trimethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one
CAS Number 521-11-9 N
PubChem (CID) 10633
ChemSpider 10187 YesY
UNII S712YZ168E YesY
KEGG D01533 YesY
Chemical and physical data
Formula C20H32O2
Molar mass 304.467 g/mol
3D model (Jmol) Interactive image
 NYesY (what is this?)  (verify)

Mestanolone (brand names Andoron, Notandron) is the 17α-methylated version of dihydrotestosterone (DHT).[1] The systematic name of mestanolone is: 17β-hydroxy-17α-methylandrost-3-one.[2] It is an orally bioavailable androgenic steroid that is highly androgenic while only slightly anabolic. It is incapable of aromatization and is not an agonist of the progesterone receptor.

Dosage Information

Dosages range from 10 mg to 30 mg a day for males. Women should avoid Mestanolone for it is very androgenic. Long-term use, more than 12 weeks, should be avoided do to hepatoxicity. Since Mestanolone is unable to convert to estrogen, it is very useful during cutting phases or when one wishes to avoid excess weight gain.


Mestanolone is also known as methylandrostanolone or 17alpha-methylandrostanolone.[3]


  1. CTD (2007). "Chemicals: mestanolone". CTD - Comparative Toxicogenomics Database. Retrieved September 3, 2007.
  2. Biology (2007). "mestanolone". Biology Retrieved September 3, 2007.
  3. "Compound Summary for CID 10633". Pubchem. Retrieved May 11, 2016.

This article is issued from Wikipedia - version of the 12/4/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.