YK-11 Liquid



Buy Myostine (YK11 for Sale) – Liquid Form

YK11 (Myostine) is a SARM and a myostatin inhibitor. In animal studies, YK 11 has shown potential in increased muscle mass, reversed muscle wasting, and decreased weight loss. YK11 has also been shown to potentially repress the levels of pro-inflammatory cytokines in the bloodstream.

Preliminary cell-based studies suggest that YK11 may potentially enhance bone growth by increasing activated PKB (protein kinase B) levels in cells. PKB has been proven to send signals to increase bone growth. Behemoth Labz sells YK11 for laboratory research use only.

We also carry injectable YK11 if you are interested.

  • CAS Number is stated as 1370003-76-1
  • Molar Mass is 430.541 g·mol−1
  • It has a Chemical Formula as C25H34O6
  • IUPAC Name is 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
  • Also known by Synonyms as YK11; (17α,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester

Keep contents sealed and stored in a cool dry place. Items are shipped in a plain envelope or bubble mailer within 24-48 ours (or next business day)


What is YK11?

YK11 is a selective androgen receptor modulator and a myostatin inhibitor. Research has shown that YK11’s chemical structure is similar to dihydrotestosterone (DHT). DHT is a naturally occurring hormone in the body that plays a critical role in the sexual development of males. [R]

Unlike most SARMs, which are full agonists of the androgen receptor (AR), YK11 potentially only partially activates the AR. Another difference between YK11 and popular SARMs is that it may inhibit myostatin. Most SARMs appear to potentially have no effect whatsoever on the body’s myostatin production. [R]


How does YK11 Work?

YK 11 has the potential to attach to the androgen receptor (AR) to inhibit myostatin production in the muscle and bone tissue, hence its classification as a myostatin inhibitor. Myostatin is a protein that helps with the movement of skeletal muscles. Myostatin also limits muscle growth. [R][R]

Preliminary studies have shown that YK11’s ability to inhibit myostatin production may potentially help stimulate muscle growth. That is because myostatin limits the muscle’s ability to create follistatin (FST), a protein that has been proven to increase muscle mass and strength. [R]


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YK11 Research

YK11 is yet to attract any clinical or human studies. All the evidence about this research chemical’s potential effects comes from cell-based or animal studies, which have shown that YK11 may have the potential to increase lean muscle mass, reverse muscle atrophy caused by sepsis, and strengthen bones.

Because of its incomplete profile and unknown side effects, YK11 isn’t approved for human consumption by the FDA. All the information presented below is for educational purposes only. Behemoth Labz sells YK11 for laboratory and research purposes only.


1. YK11 and Muscle Growth

A cell-based study has shown that YK11 may potentially increase muscle mass by inhibiting myostatin and thus enhancing follistatin (FST) levels. It was also noted that YK11’s potential anabolic effects were reversed by the anti-FST antibodies. This shows that the activation of FST is key to YK11’s potential anabolic effects. [R]

Another important observation the study made is that YK11 might potentially be more potent in inducing myogenic differentiation and, in turn, muscle tissue growth than DHT. This might prove to be a potential crucial finding, given that DHT is one of the more potent muscle-building hormones in the body. [R]

Results from the study further make clear that YK11 potentially takes a different route to induce anabolic effects than other SARMs as well as DHT. Most selective androgen receptors activate the AR to increase muscle growth, whereas YK11 may depend on the activation of FST for the same.


2. YK11 and Bone Health

In a cell-based study, YK11 activated PKB (protein kinase B) in the osteoblast cells of mice. PKB are enzymes that, upon activation, send signals to stimulate bone growth. PKB-activation is known to be a key regulator of androgen-mediated mediation of osteoblasts (cells that form bone tissue). [R]

Results from the study show that YK11 increased the activity of osteoprotegerin, a protein that regulates bone density and prevents osteoporosis during pregnancy. YK11 also increased the activity of osteocalcin, a hormone that locks protein inside the bones to increase their strength and density. [R][R]

YK11 also accelerated osteoblast cell proliferation, the first step of bone formation. In addition, YK11 promoted alkaline phosphatase (ALP) activity, a marker of bone maturation. Thus, this cell-based study showed that YK11 might potentially help in bones’ formation, strengthening, and maturation. [R]


3. YK11 and Sepsis

An animal study found that myostatin inhibition by YK11 treatment might decrease the mortality rate in septic mice. The study further showed that YK11 might help revert muscle wasting during sepsis and subdue the inflammatory environment surrounding the disease. [R]

Results from this study show that YK11 decreased weight loss in the mice in a concentration-dependent manner. That means that the total body weight of the septic mice increased or recovered better with increasing concentration of this myostatin inhibitor.

All in all, when administered to septic mice, YK11 increased total body weight and reverted muscle mass loss as well as muscle cell atrophy. Results from the study highlight the potential of YK11 as a preventative agent for sepsis-related muscle wasting.


4. YK11 and Body Fat

In the above study involving septic mice, YK11 treatment caused fat loss. This result is consistent with previous studies showing a direct relationship between myostatin deficiency and fat loss.

One animal study has shown that mice lacking the myostatin gene have a widespread increase in skeletal muscle. Aside from that, myostatin-deficient mice experience a significant reduction in fat accumulation with increasing age compared with their wild-type counterparts. [R]

These effects aren’t limited to animals. A clinical study has detected a potential significant reduction of myostatin in obese men after weight loss. Potential changes in myostatin and changes in fat-free mass by weight loss correlated positively in this small-scale human trial. [R]


Frequently Asked Questions


What Are SARMs?

Selective androgen receptor modulators are research chemicals that may selectively bind to androgen receptors in the body. Unlike conventional anabolic compounds, which don’t spare ARs in the prostate and other sensitive body parts, SARMs are more selective in their action.


What is the half-life of YK11?

YK11 is thought to have a potential half-life of 12-14 hours.


Where to Buy YK11 for Sale?

Behemoth Labz is the best place to buy YK11 Myostine online.

We have been around since 2014, supplying the highest-quality research compounds money can buy. All of our products come with a 100% satisfaction guarantee, free and fast shipping, and a money-back guarantee. We carry liquid YK11.



YK11 has demonstrated the potential ability to stimulate rapid muscle growth, revert muscle wasting, and induce fat loss in various pre-clinical studies. However, in the absence of large-scale, randomized clinical trials, more research is needed to fully understand YK11’s potential safety and effects.



BehemothLabz Disclaimer

Please make sure you go through the Terms and Conditions, and please familiarize yourself with it as it is important. Please research the scientific uses of this product before making any purchases. Make note that the packaging and labels of the product may differ from those shown on the website. Buying the product means you agree with our Terms and Conditions. You can contact our awesome customer service team at support@behemothlabz.com if you are not fully satisfied with the product. Customer satisfaction is our number one priority!

ATTENTION: All BehemothLabz products are strictly for LABORATORY AND RESEARCH PURPOSES ONLY. They are not to be used for any human and veterinary purposes.


15ml / 7mg per ml / 100mg, 30ml / 33mg per ml / 1000mg


14 reviews for YK-11 Liquid

  1. Dan L. (verified owner)

  2. Tyler (verified owner)

  3. Anonymous

    This is working for me.

  4. Russell (verified owner)

  5. Ben Gray

    Highly recommended product! Thanks to my brother for introducing me. He has been a customer for a few years already.

  6. James P K

    It feels great! I noticed immediately that my strength increased.

  7. Anonymous

    This is a great product. I have experienced improved energy and stamina, and muscles are coming along with all the extra training.

  8. Jessica S. (verified owner)

  9. James

    I started to see weight loss quickly, closer to the goal I set for myself.

  10. Bruce Simmons

    This product has helped me get back in shape by increasing my stamina.

  11. Jon

    This is cheaper compared to other sites, and I’m very satisfied with the results of my research.

  12. Scott

    I will only buy research products here. There was a lot of communication with each person on the other side. The prices are very good.

  13. Arnaldo Mohr


  14. Stan

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