YK-11 [Powder]


Earn 13 - 23 points upon purchasing this product.

(10 customer reviews)
  • Synonyms:  YK11; (17α,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester
  • Category: SARMs & Metabolics
  • Interested in learning more about this YK-11? Find out more here.
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YK-11 [Powder] – Product Details

What is YK-11 Powder?

YK-11 is an intriguing compound that falls under the category of selective androgen receptor modulators (SARMs), but it possesses unique characteristics. This research compound shares similarities with other SARMs as it has the potential to bind to androgen receptors in muscle and bone tissues. However, what sets YK-11 apart is its additional ability to inhibit myostatin, a protein that naturally limits muscle growth. Moreover, unlike most SARMs that act as full agonists, YK-11 has been discovered to function as a partial agonist.

Product Name YK-11 Powder 
Application Scientific 
CAS 1370003-76-1
Molar Mass 430.541 g·mol−1
Chemical Formula C25H34O6
IUPAC Name Methyl (2E)-2-[(8R,9S,10R,13S,14S,17S)-2′-methoxy-2′,13-dimethyl-3-oxospiro[1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-17,5′-1,3-dioxolane]-4′-ylidene]acetate
Synonyms YK11; (17α,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester
Storage Minimize open air exposure, store in a cool dry place
Terms Kindly make yourself aware of the scientific uses of this product, and make sure to read the Terms and Conditions before making a purchase. By completing your order and making the payment, you agree to our Terms and Conditions. Please note that the packaging of the product might be slightly different than what is shown on the website.

In case you are not 100% satisfied with the product you receive, you can contact us at [email protected]. We will be glad to help you as customer satisfaction is our top priority.

ATTENTION: All RCD.bio products are strictly restricted to LABORATORY AND RESEARCH PURPOSES ONLY. They are not to be used on humans or animals.



500mg, 1000mg


10 reviews for YK-11 [Powder]

  1. Jorge Palmer

    I highly recommend this one, and the people behind the brand are easy to talk to.

  2. Izaiah

    Amazing product!

  3. David Hernandez

    Excellent customer service.

  4. l Waters

    I’ve purchased numerous products from this company and have always been satisfied with the quality!

  5. Anonymous

    I’m very happy with this product! More Muscle Mass and Strength and stronger bones I felt after a month of using this powder consistently. Amazing.

  6. Andy Eaton

  7. Nelson H

    My recovery is amazing with this powder.

  8. Francisco

    I just ordered another packet. Very impressed.

  9. Lorcan T

    Great quality yields great results, you have proven this time and time again, I love you products.

  10. Sam

    Being a bodybuilder, I love my muscle growth and this product really helps.

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