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What is YK-11? Research Information

Product information:

  • Chemical formula – C25H34O6
  • Molecular mass – 430.5

Other names:

  • YK11
  • 431579-34-9
  • 1370003-76-1
  • SCHEMBL20833045
  • MFCD30343804

Discovery of YK-11:

YK-11 is a synthetic compound in the steroidal selective androgen receptor modulator (SARM) category. This compound is an androgen receptor (AR) and partial gene-selective agonist. In vitro, this compound was tested for its effective anabolic activity. As a result of these in vitro experiments, YK-11 was found to be more potent than dihydrotestosterone (DHT). Additionally, this compound has been investigated as an effective treatment for animal muscle atrophy or muscle wasting.

Mechanism of action:

According to different clinical researches and data, YK-11 is an androgen receptor ligand that helps in the stimulation of the muscle cells for producing more anabolic factors in the body for increased muscle growth. Compared to the other forms of SARMs, YK-11 has a more stimulating effect on the different skeletal muscles of the body. As compared to testosterone, YK-11 is 300x more active anabolically. According to the clinical studies, YK-11 takes about 6-8 weeks to show effective results.

Clinical applications:

With the use of YK-11, one can have different benefits ranging in different categories as:

  • An immense increase in the lean muscle mass of the body
  • Muscle hypertrophy (increase in muscle mass as compared to fat storage)
  • Loss of fat from the body muscles and other parts (unwanted body fat)
  • Enhanced energy levels
  • Improvement in the athletic and physical performances
  • Enhancement in the density of bones to prevent the osteoporosis
  • Improved body’s metabolic functioning
  • Stimulation of physical strength and endurance

Athletic performance: Athletic performances and muscle endurance/strength have a close and direct relationship between them. An increase in physical endurance can immensely increase the stamina and intensity to carry out physical and athletic performances.

Muscle mass: One of the most significant effects of YK-11 is its role in building muscle mass. First of all, YK-11 helps with growing muscle mass in a shorter time. Secondly, this compound is the myostatin inhibitor which makes the body trigger more muscle mass production.

Endurance: According to the other research, YK-11 is also helpful in increasing the endurance to continue the longer and more intense workouts. One of the most significant factors for bodybuilders is the maintenance of muscles that they have grown. In these cases, YK-11 is the best approach for retaining what they have already achieved.


The information provided about YK-11 in this section is only for research advancement and disbursement of knowledge. The material collected in this article is meant for informational purposes about YK-11. It is not to be considered instructional in any way. Moreover, we have further empathized with this by making sure no dosage information of YK-11 or recommendations about its way of consumption is mentioned. The information available in this article is a collection from different recognized studies and researches conducted by known experts and researchers in controlled medical facilities and institutions. Furthermore, the information provided in the article is not to encourage the reader to start its consumption or as an advertisement of the product. Administering any supplement or medication not FDA approved may be harmful and may cause serious illness.  Peptide Pros insist that none of their products be ingested under any circumstances.


  • Yatsu, Tomofumi, et al. “Selective androgen receptor modulator, yk11, up-regulates osteoblastic proliferation and differentiation in mc3t3-e1 cells.” Biological and Pharmaceutical Bulletin 41.3 (2018): 394-398.
  • YK 11 | C25H34O6 |go.drugbank|
  • Lee, Su Jin, et al. “Myostatin inhibitor YK11 as a preventative health supplement for bacterial sepsis.” Biochemical and Biophysical Research Communications 543 (2021): 1-7.
  • Viribay, Aitor, et al. “Effects of arginine supplementation on athletic performance based on energy metabolism: A systematic review and meta-analysis.” Nutrients 12.5 (2020): 1300.
  • YK-11 | C25H34O6 |drugs.selfcode|
  • YK-11 | SARMS |Eubusinessreview|

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