Buy YK-11 Powder (Myostine) For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

What is YK-11 Powder (Myostine)

YK-11 (Myostine) is a synthetic, steroidal selective androgen receptor modulator (SARM) based on the structure of 5α-dihydrotestosterone (DHT). YK-11 is notable as a partial, gene-selective AR agonist that combines potent anabolic activity with unique myostatin inhibition. This dual action allows it to promote substantial muscle growth and differentiation, primarily by increasing follistatin expression, which inhibits myostatin—a protein that otherwise restricts muscle development. YK-11 is under active investigation in laboratories studying muscle wasting, body recomposition, and bone anabolism. Existing exclusively as a research chemical, it is not approved for human or veterinary use.​

Technical Information of YK-11 Powder (Myostine)

Typical research applications of YK-11 Powder (Myostine)

• Investigation of muscle hypertrophy, prevention of atrophy and muscle wasting

• Studies on myostatin inhibition via follistatin upregulation

• Research into body recomposition: lean muscle growth and fat reduction

• Exploration of bone cell proliferation and mineralization in models of osteoporosis​

• Molecular mechanistic studies of gene-selective partial AR agonists

• Comparative studies with other steroidal and non-steroidal SARMs

Safety and Handling Information for YK-11 Powder (Myostine)

• Always handle using proper personal protective equipment: gloves, lab coat, and safety glasses

• Handle in a chemical fume hood or well-ventilated laboratory

• Avoid inhalation, ingestion, skin or eye contact; wash thoroughly if exposure occurs

• Store at −20°C in sealed, dry containers, protected from sunlight​

• Dispose of waste according to local chemical safety and hazardous waste protocols

• Not for human or animal consumption—laboratory use only

Ordering & Shipping Summary for YK-11 Powder (Myostine)

• Supplied by accredited research chemical distributors in standard quantities (10–100 mg to 1 gram)

• Purity, batch analysis, and storage/shipping documentation provided by suppliers

• Shipped in sealed, moisture-controlled packaging; desiccants and cold packs as required

• Shipping follows all hazardous goods regulations and is restricted to licensed institutions and researchers

• Average price range: $49 for 10 mg to $450 for 100 mg depending on supplier and quantity​

Storage Conditions for YK-11 Powder (Myostine)

• Store at −20°C in airtight, moisture-free containers for maximum stability

• Protect container from humidity, heat, and light

• Recommended use of desiccant for long-term storage

• For dissolved stock: use within 1 month at −20°C, or 6 months at −80°C​

• Avoid repeated freeze-thaw cycles to preserve compound integrity

Alternatives to YK-11 Powder (Myostine)

• Non-steroidal SARMs: RAD-140 (Testolone), LGD-4033 (Ligandrol)

• Other myostatin inhibitors/follistatin pathway activators

• Steroidal SARMs: S-23, or DHT-based analogues

• Conventional anabolic agents (for controlled research only)

• Small molecule muscle growth regulators under research

FAQ About YK-11 Powder (Myostine)

Q: Is YK-11 approved for human use?
A: No, YK-11 is strictly an experimental research compound and not authorized for human or animal use.​

Q: What makes YK-11 unique among SARMs?
A: It is steroidal, acts as a partial AR agonist, and uniquely increases follistatin to inhibit myostatin for enhanced muscle growth.​

Q: What solvents can be used for research preparation?
A: DMSO (up to 64 mg/mL), slightly soluble in chloroform and methanol, and poorly soluble in water.​

Q: What is its shelf life?
A: Stable for up to 3 years at −20°C as powder if stored properly.​

Call to Action

Order high-purity (>98%) YK-11 Powder (Myostine) today from certified chemical suppliers for your laboratory’s advanced muscle growth and myostatin inhibition research. Always follow appropriate storage, handling, and regulatory protocols to ensure the reliability and safety of your research results.