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Product Common Names: YK-11, YK11
Chemical Name: (17α)-17-Methyl-17-hydroxy-2-oxa-5α-androsta-1,13-dien-3-one
Synonyms: Myostatin inhibitor YK-11, YK11 SARM
CAS Number: 431579-34-9
Molecular Formula: C₁₉H₂₈O₃
Molecular Weight: 304.42 g/mol
Product Specifications:
- Appearance: White to off-white crystalline powder
- Purity: ≥98% (HPLC)
- Solubility: Soluble in DMSO, ethanol; poorly soluble in water
- Storage: Store at -20°C in a tightly sealed container, protected from light and moisture
Uses:
YK-11 is a synthetic compound recognized for its dual mechanism of action in promoting muscle growth and strength. It functions as a myostatin inhibitor, blocking the activity of myostatin—a protein that limits muscle cell proliferation—thereby enabling accelerated muscle hypertrophy. Additionally, YK-11 acts as a Selective Androgen Receptor Modulator (SARM), binding to androgen receptors in muscle and bone tissues to enhance anabolic signaling without the systemic side effects associated with traditional steroids. This dual activity makes it popular in fitness communities for its potential to increase lean mass, reduce fat, and improve recovery. However, it remains investigational and is not approved for medical use.
Key Health Benefits:
- Stimulates skeletal muscle growth via myostatin suppression.
- Enhances strength and power output through androgen receptor activation.
- May improve bone mineral density and reduce fracture risk.
- Potential to support fat loss while preserving lean mass.
- Accelerates recovery post-exercise by reducing muscle atrophy signaling.
Packaging Details:
- Standard: Sealed aluminum foil bags with desiccant.
- Custom bulk quantities available (contact for pricing and specifications).
Delivery Details:
Order Processing & Dispatch:
Your order will be processed and shipped within 1 business day after payment confirmation.Shipping Carriers:
We partner with leading global carriers, including UPS, DHL, FedEx, TNT, and EMS. Depending on your location, we select the most reliable and efficient service to ensure safe and timely delivery.Estimated Delivery Timelines:
- EMS: 5–14 business days
- DHL/UPS/FedEx: 4–7 business days
Note: Delivery times may vary slightly due to customs clearance or regional logistics.
Customs Compliance Assurance:
For countries with strict customs regulations (e.g., Russia, Australia, Canada), we meticulously prepare all required documentation and comply with local laws to guarantee 100% successful delivery.Delivery Guarantee:
Most orders arrive within 4–7 business days. In the rare event of loss, damage, or undelivered shipments due to transit issues, we offer a free full replacement with no extra cost to you.
Quality Assurance:
- Batch-specific Certificate of Analysis (CoA) provided.
- Third-party tested for purity, identity, and heavy metals.
- Manufactured under strict GMP-compliant conditions.
Legal Compliance:
Sold exclusively for lawful research purposes. The buyer assumes all liability for legal use. Compliance with all applicable regional and international regulations (e.g., REACH, FDA guidelines for investigational compounds) is the responsibility of the purchaser.
