YK-11 Powder (Myostine)
$56.72
High-purity YK-11 Powder (Myostine) for research use only. Potent steroidal SARM with myostatin inhibitory activity. ≥98% purity, discreet US shipping, and secure payment options. Not for human consumption.
YK-11, also known as Myostine, is a powerful myostatin inhibitor that significantly accelerates muscle growth and reduces fat mass. Although it is often classified as a SARM, YK-11 works differently by inhibiting myostatin, a protein that limits muscle growth. This process stimulates the production of follistatin, which leads to impressive gains in lean muscle mass. Users report gaining up to 15 pounds of muscle mass in a single cycle while reducing body fat.
Form: Powder (Price per gram)
Brief Intro
YK-11 Powder, also known as Myostine, is a synthetic steroidal selective androgen receptor modulator (SARM) derived from dihydrotestosterone (DHT). It is distinguished by its potent anabolic effects on muscle cells, promoting muscle growth more effectively than traditional androgens like DHT. YK-11 acts both as a partial androgen receptor agonist and a myostatin inhibitor by upregulating follistatin, a protein that suppresses myostatin, thereby enhancing muscle hypertrophy. It is an experimental compound intended exclusively for scientific research and analytical purposes.
Chemical Structure / Physical Properties
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Chemical Name: 17α-methyl-δ2-17β-hydroxyestra-4,9-dien-3-one
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Molecular Formula: C25H34O6
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Molecular Weight: 430.54 g/mol
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Form: Fine white powder
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Purity: Typically ≥98%
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Structural Features: Steroidal backbone with modifications enabling selective androgen receptor modulation and myostatin inhibition
Intended Use
This product is intended strictly for laboratory research, including pharmacological studies on muscle growth, myostatin inhibition, and androgen receptor modulation. It is not for human consumption. Researchers study YK-11’s effects on muscle cell differentiation, anabolic activity, and potential therapeutic applications such as preventing muscle wasting during sepsis.
Packaging & Shipping
YK-11 Powder is securely packaged and shipped discreetly with tracking. Typical delivery times are 24-72 hours within the USA and up to 5 days internationally, depending on destination. Shipping fees are calculated at checkout based on location.
Safety and Handling
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Avoid inhalation, ingestion, and skin or eye contact.
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Use appropriate personal protective equipment such as gloves and safety goggles.
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Due to its methylated steroidal structure, potential liver toxicity and hormonal suppression risks exist.
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Seek immediate medical attention in case of exposure or adverse effects.
Legal & Compliance Disclaimer
All products are sold for research purposes only and are not intended for human consumption. Customers must verify the legal status of YK-11 in their jurisdiction before ordering. The vendor reserves the right to accept or decline orders based on intended use.
🚚 Shipping & Delivery Information
- Fast & Discreet Shipping: Orders are carefully packaged with no product names or branding on the parcel.
- Processing Time: All orders ship within 4 hours of confirmed payment.
- USA Delivery: Guaranteed within 24–72 hours via trusted couriers.
- Worldwide Delivery: Typically delivered in 2–5 business days, location dependent.
- Tracking Provided: You’ll receive full tracking information once your order is dispatched.
- No Signature Required: Leave delivery notes during checkout to help ensure secure delivery.
- Shipping Fee: Calculated automatically at checkout based on your location.
- Legal Responsibility: Please verify the legal status of the product in your location before placing an order.
Have questions? Reach out anytime at contact@usalabchems.com
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