SKU: 34193662984

YK-11 – Solution, 300mg (10mg/mL)

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Description

YK-11 – Solution, 300mg (10mg/mL)YK 11 YK 11, also known as myostine, is a Selective Androgen Receptor Modulator (SARM) clinically proven to partially activate the androgen receptor while also acting as a myostatin inhibitor. A compelling study led by researchers Lee et al. investigated YK 11 as a potential muscle building and muscle preserving compound under conditions of sepsis. In the experiment, mice were fed two different doses of YK 11 (orally administered at 350 mg kg and 700

YK-11

YK-11, also known as myostine, is a Selective Androgen Receptor Modulator (SARM) clinically proven to partially activate the androgen receptor while also acting as a myostatin inhibitor.

A compelling study led by researchers Lee et al. investigated YK-11 as a potential muscle-building and muscle-preserving compound under conditions of sepsis. In the experiment, mice were fed two different doses of YK-11 (orally administered at 350 mg/kg and 700 mg/kg) for ten days. The researchers then examined how these mice responded to a peritoneal injection of E. coli bacteria.

The study demonstrated that YK-11 inhibited the activity of myostatin, a hormone that limits muscle growth in mammals (source). Not only did the mice treated with YK-11 maintain their body mass during the disease phase, but they also had a more favorable fat-to-muscle ratio, indicating less fat and more lean tissue compared to the control group.

Furthermore, the results showed that the treated mice were able to recover lost muscle mass in the back and thighs following exposure to systemic E. coli. Their muscle cells also demonstrated increased resistance to atrophy when compared to those of the control group.

In addition to its impact on muscle mass, YK-11 also affected the immune response to gram-negative bacteria. The treatment with YK-11 led to reduced negative effects of bacterial infections, including a decrease in endotoxins and inflammatory markers in the lungs.

Moreover, there was a significant reduction in biomarkers indicating organ damage, including liver and kidney markers such as AST, ALT, and BUN. The use of YK-11 also appeared to enhance the removal of harmful bacteria from the mice's organs (source).

Lastly, it's worth noting that the study also examined the survival rate during sepsis, and mice treated with YK-11 had a higher likelihood of surviving up to the 72-hour mark. These treated mice showed little to no evidence of bacterial colonization in their vital organs.

Concentration
10mg/ml.

Half Life
6 – 10 hours.

DISCLAIMER
This material is sold for use in laboratory research only. Terms of sale apply. Not for human consumption, nor for medical, veterinary or domestic use. Please familiarize yourself with our DISCLAIMER before ordering.

 

Data Sheet

YK11 – Solution, 300mg (10mg/mL)

Application Selective Androgen Receptor Modulator, Myostatin Inhibitor
CAS 1370003-76-1
Molar Mass 430.534 g/mol
Chemical Formula C25H34O6
IUPAC Name methyl 2-{5-methoxy-5,15′-dimethyl-5′-oxospiro[1,4-dioxolane-2,14′-tetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadecan]-6′-en-3-ylidene}acetate
Synonyms YK11, YK-11, Myostine
Storage Room temperature
Solubility Soluble in PEG400, Ethanol
Organoleptic Profile Clear liquid
Physical Form Solution in PEG-400 , Ethanol
Specification 10mg/mL ±5%
Terms This material is sold for laboratory research use only. Terms of sale apply. Not for human consumption, nor medical, veterinary, or household uses. Please familiarize yourself with our Terms & Conditions prior to ordering.
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SKU: 34193662984

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Lauryn E.
Port Orchard, US
★★★★★ 4
Awkward sizing but decent fit
Size: 16, Color: Double Talk
I normally wear a girls 14 but had to size up with these. The waist was slightly too small while the length was right. After sizing up to a 16, the waist fit perfectly but the pants were too long. They look alright with heels or platform sandals but with any other type of shoe, they would need to be cuffed or shortened at the hem. I’m 4’11” and about 114lbs
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Reviewed in the United States on June 16, 2025
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WM Yeh
Alexandria, US
★★★★★ 5
Great quality
Size: 8, Color: Double Talk
Great quality jeans! My daughter needed blue jeans for her choir performance and I only found out right before the show. I’m so glad I could find a pair on Amazon and get it the next day — what a life saver! They fit well and she was so happy to wear her first Levi’s!
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Reviewed in the United States on February 15, 2026
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Julie Fraley
Battle Creek, US
★★★★★ 5
Levi jeans
Size: 8, Color: Doubt It
Fit great.
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Reviewed in the United States on May 11, 2026
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Dawn little
Whiting, US
★★★★★ 5
Adult four foot eleven
Size: 16, Color: Doubt It
I'm an adult woman. 4 11" 135 pounds. Because it matters, I'll say I have a flat belly. Size 16 fits perfect!! Curves, length and all.
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Reviewed in the United States on April 2, 2026
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Nina Nakai
Lowell, US
★★★★★ 5
Nice fabric, comfortable, easy maintenance
Special Size: 27.5" Full Length, Size: Large, Color: Taupe, Special Size: 27.5" Full Length, Size: Large, Color: Taupe
I ordered a medium and they’re actually a size large. And they are just too large. I should’ve gotten the small, as recommended I thought I was ordering medium and I think I would’ve been OK with a medium, but where I usually wear a small and they sent me a large. It was just ridiculously large. They are lightweight and they are warm. I’m a senior and I’m thin so I get cold very easily especially in early morning and evening, so I like to wear them in the morning for my walks/yoga , they also work nicely under a longish skirt so it’s not so sheer… will definitely get more but will go with the small size. Just for reference, I’m 5 foot seven I usually wear a small or a size 5/6 usa size so these were too large, particularly in the waist just overall they were too large, but I think even if I got a small size they’re still gonna be kind of large in the stomach. I have an hourglass shape just for reference, but they are very comfortable, and I love the fabric. I am keeping them because I like the fabric and I really need them. I just will not wear them out of the house right now because they’re not fitting properly but next go round we’ll get the right size. Price was right they were having a sale so it was a bit of an impulse buy. But hello it was only 10 bucks! so that’s why it’s not worth sending it back for me. Overall, very nice quality and would recommend. Cats like the fabric too! 😸
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Reviewed in the United States on May 4, 2026

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