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This product is intended solely for use as a research chemical in vitro and laboratory experimentation by licensed, qualified professionals.
YK-11,a dual-action compound that functions as both a SARM and a myostatin inhibitor.
Structurally similar to dihydrotestosterone (DHT) but with fewer androgenic side effects .
Not FDA-approved—classified as a research chemical.
| Specifications | Price |
|---|---|
| 10mg × 100 tablets | $85.00 |
HPLS
Testing
Endotoxin
Assay
TYMC
Test
TYMC
Test
Heavy Metal
Screening
| Characteristic | Details |
|---|---|
| Molecular Formula | C25H34O6 |
| Molecular Weight | 430.53 |
| CAS Number | 1370003-76-1 |
YK-11 functions as a partial agonist of the androgen receptor. It activates the receptor but not to the full e*tent like natural androgens such as testosterone or DHT. It does not promote the typical N/C-terminal interaction within the AR, which is required for full transcriptional activation.
Instead, YK-11 induces muscle growth through a secondary mechanism: it significantly increases the e*pression of follistatin, a potent inhibitor of myostatin—a protein that suppresses muscle growth.
Muscle Growth Beyond Genetic Limits
Inhibits myostatin, a protein that restricts muscle growth, allowing for accelerated hypertrophy.
Increases follistatin, a protein that promotes muscle development.
Users report 5–15 lbs of lean muscle gain in 8–12 weeks.
Strength & Performance Enhancement
Boosts power output, endurance, and VO₂ ma*.
No water retention, leading to harder, denser muscles.
Fat Loss & Body Recomposition
Enhances fat o*idation, making it effective for cutting cycles.
Bone Density & Joint Health
Strengthens bone mineral density, reducing injury risk.
Unlike steroids, it does not cause gynecomastia, prostate enlargement, or severe hair loss
Laboratory studies on mouse and human myoblasts (muscle precursor cells) have shown that:
YK-11 increases muscle cell differentiation and growth more potently than DHT.
It exhibits strong anabolic activity without stimulating androgenic effects on non-muscle tissue (though this has only been evaluated in vitro so far).
In animal models, it has demonstrated protective effects against muscle wasting due to sepsis, suggesting potential therapeutic uses.
All products are sold solely for scientific research purposes. Researchers are responsible for ensuring compliance with local regulations and institutional guidelines. Keep out of reach of children and unauthorized personnel.
1688pharmacy is more than just a trusted supplier of research peptides. We are committed to scientific advancement, dedicated to providing the highest quality pharmaceutical-grade compounds that empower researchers and clients to achieve their goals.
Our proprietary processes and meticulous sourcing of premium materials ensure that every peptide we offer meets the most stringent pharmaceutical standards with verified 99% purity.
Every peptide undergoes rigorous third-party laboratory testing using advanced techniques like HPLC, LC-MS, and NMR. Complete Certificates of Analysis available for transparency and verification.
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