Buy YK-11 (Myostine) Capsules for Muscle Growth & Myostatin Research with Discreet Worldwide Shipping
What is YK-11 (Myostine)?
YK-11, commonly known as Myostine, is a synthetic selective androgen receptor modulator (SARM) and myostatin inhibitor used in laboratory research to study muscle differentiation, anabolic activity, and myostatin regulation. Originally developed by Japanese researcher Yuichiro Kanno, YK-11 is a steroidal SARM derived from dihydrotestosterone (DHT), making it one of the most potent research compounds in the field of muscle and gene expression studies.
Researchers are particularly interested in YK-11 for its dual mechanism—binding to androgen receptors to promote anabolic effects while simultaneously inhibiting myostatin, a protein that limits muscle growth.
How Does YK-11 Work in the Body?
YK-11 acts primarily through androgen receptor (AR) activation and myostatin suppression:
Androgen Receptor Activation:
By binding to ARs in muscle tissue, YK-11 stimulates gene transcription pathways that increase muscle protein synthesis and satellite cell activation.Myostatin Inhibition:
Myostatin is a regulatory protein that restricts muscle cell growth. YK-11 increases levels of follistatin, a natural myostatin blocker, allowing for enhanced muscle fiber development.Synergistic Effect on Muscle Growth:
The compound’s DHT-derived structure allows it to exert anabolic effects with minimal estrogenic activity, making it a key compound for myogenesis and hypertrophy research.
Key Benefits of YK-11 (Myostine)
Promotes muscle differentiation and hypertrophy
Increases follistatin production, reducing myostatin activity
Supports lean muscle mass development in research models
Enhances anabolic gene expression via AR binding
Potential synergy with other SARMs in controlled lab experiments
(For research purposes only. Not approved for human or veterinary use.)
Product Details and Purity
Product Name: YK-11 (Myostine) Capsules
Form: Encapsulated research compound
Purity: ≥ 99% (HPLC verified)
Chemical Formula: C25H34O6
Molecular Weight: 430.5 g/mol
Appearance: White crystalline powder (encapsulated)
Storage: Store at 2–8°C in a cool, dry environment
Shelf Life: 24 months (unopened)
Each batch undergoes independent third-party testing to verify chemical identity, purity, and concentration for accurate, reproducible research outcomes.
Dosage & Usage Guidelines
YK-11 (Myostine) is intended strictly for laboratory research use only. Dosage depends on study parameters and research models.
In-vitro concentration ranges: Typically 10–500 nM (as reported in literature).
Handling: Use appropriate laboratory protective equipment.
Note: Never ingest or apply to humans or animals—non-clinical research only.
Safety, Side Effects & Precautions
YK-11 is a potent experimental compound and should be handled by qualified personnel in controlled lab environments.
Avoid inhalation or skin contact.
Store away from sunlight and moisture.
Dispose of material according to chemical safety standards.
To date, no human clinical trials have been approved; therefore, human safety data are unavailable.
Quality Assurance & Testing
All YK-11 Capsules at Peptide Online Store are:
HPLC and MS tested for purity and identity
Batch-certified with traceable lot numbers
Manufactured in ISO-certified facilities under strict quality protocols
This ensures each capsule meets the highest research-grade standards for consistency and reproducibility.
Commitment to Quality and Compliance
At Peptide Online Store, we are committed to providing scientifically verified, research-grade compounds. Every YK-11 batch comes with a Certificate of Analysis (COA) confirming purity, stability, and composition.
Our products comply with international shipping and safety regulations, ensuring ethical sourcing and transparent supply chains.
Potential Applications (For Research Use Only)
YK-11 (Myostine) is being explored in research areas such as:
Muscle wasting and sarcopenia studies
Myostatin pathway modulation
Follistatin gene expression analysis
Anabolic-catabolic balance in muscle tissue
Androgen receptor-mediated gene regulation
These studies contribute to understanding muscle development, regeneration, and metabolic regulation.
Why Choose Peptide Online Store for YK-11 (Myostine)?
Verified 99%+ purity and authentic research quality
Discreet worldwide shipping with tamper-proof packaging
Responsive scientific support for researchers
Competitive pricing and bulk order options
Trusted by academic institutions and professional laboratories globally
Shipping & Delivery Information
We provide fast and secure international shipping using reputable carriers.
Orders ship within 24–48 hours of confirmation.
Discreet, protective packaging ensures product integrity.
Tracking information is provided for all orders.
Temperature-sensitive compounds are shipped under controlled conditions where applicable.
How to Order Online
Visit PeptideOnlineStore.com
Search for “YK-11 (Myostine) Capsules”
Select your preferred quantity and add to cart
Complete checkout via our secure payment system
Receive an order confirmation and tracking link via email
For institutional or bulk research orders, contact our team for a customized quotation.
Frequently Asked Questions (FAQ)
Q1: Is YK-11 a SARM or steroid?
A: YK-11 is a steroidal SARM, derived from DHT, and exhibits selective androgen receptor activity.
Q2: What makes YK-11 unique?
A: It combines SARM activity with myostatin inhibition, giving it a dual research potential unlike most other SARMs.
Q3: Is YK-11 safe for human use?
A: No. It is not approved for human or veterinary consumption and is sold strictly for research purposes only.
H2: Related Products to YK-11
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SR-9009 (Stenabolic) Capsules
GW-501516 (Cardarine) Capsules
Final Thoughts
YK-11 (Myostine) is one of the most intriguing anabolic research compounds currently studied for its unique myostatin-inhibiting and muscle-building mechanisms. Backed by rigorous lab testing and consistent purity verification, YK-11 from Peptide Online Store is the trusted choice for researchers exploring myogenesis, muscle recovery, and androgen receptor biology.
Our commitment to quality, transparency, and scientific integrity ensures every order supports credible, reproducible research worldwide.