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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★★★★★ 5
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Fit Type: Boyshort, Size: X-Large, Color: Assorted Colors
Bought the boy shorts size XL for postpartum and am still wearing them 8 months later! Holds all the postpartum goods in but are super stretchy too. Sooooo comfy! They do roll up when putting pants on but if you’re wearing them to bed or around the house, amazing!
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Boise, US
★★★★★ 3
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Fit Type: Boyshort, Size: XX-Large, Color: Assorted Colors
NIce quality, comfortable fabric, dries quick, and retains color after multiple washings. However; the fit did not work 100% for me. The legs kind of rode up and the boy shorts had a tendency to ride down, especially with consistent bending up and down activity. Good product but not a perfect fit for my shape. The bikini style was ideal and purchased multiple times.
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Lotanya Mclean
Charlottesville, US
★★★★★ 5
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Fit Type: Boyshort, Size: Medium, Color: Assorted Colors
These are very comfortable, lovely colors. You need to size down when purchasing a the material is high stretch.
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Reviewed in the United States on May 26, 2026
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Kim
Phoenix, US
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Great choice
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Very comfortable
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Reviewed in the United States on May 24, 2026
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bopster429
Whiting, US
★★★★★ 5
Very comfortable, right length
Size: Large, Color: Black,grey
This product arrived as described. I like the trunk length, not the boxer brief length. They are comfortable. Hold up well when worn and washed. I don't seem to sweat as much. These were ordered to replace ones ordered about 2-3 years ago due loss of weight, had to down size. The waist band doesn't roll as like other brands.
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Reviewed in the United States on May 20, 2026

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