YK-11 100G Raw Powder

YK-11 100G Raw Powder | Myostatin Inhibitor

QSC YK-11 (Myostatin Inhibitor / Partial AR Agonist) — ≥99% HPLC purity, MS confirmed, Janoshik COA. 100G bulk. Research use only.

✓ 99%+ Purity	✓ COA Available
✓ Free Shipping on All Orders	✓ Ships from China (🇨🇳)

$4,800

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SynthesisChina Warehouse

What is YK-11?

YK-11 is a steroidal myostatin inhibitor and partial AR agonist with a unique dual mechanism — induces follistatin (blocking GDF-8/myostatin anti-anabolic signalling) while providing partial androgenic activity. Research tool for myostatin biology, follistatin induction, and SARM-adjacent muscle growth pharmacology. Research use only.

Research Applications

Myostatin Inhibition

Follistatin induction, GDF-8 pathway suppression, muscle mass ceiling removal

Follistatin Biology

Follistatin mechanism, ActRIIB pathway, downstream myogenic signalling

Dual Mechanism Research

AR partial agonism + myostatin inhibition — isolated vs combined pathway dissection

Muscle Hypertrophy Models

Satellite cell activation without myostatin constraint, fibre size studies

Myostatin vs Follistatin

YK-11 follistatin vs direct anti-myostatin antibodies — comparative effectiveness

Quick Specs

Form	Raw bulk powder (crystalline/amorphous)
Purity	≥99% by HPLC — every batch
CAS Number	1370003-76-1
Molecular Formula	C₂₅H₃₄O₆, MW 430.5
Identity	MS molecular weight confirmed — every batch
Compound Type	Myostatin Inhibitor / Partial AR Agonist
COA	Janoshik-independent, publicly verifiable
Manufacture	In-house synthesis — Qingdao, China
Storage	Room temperature sealed \| cool, dry storage
Shelf Life	24 months (unopened)

Certificate of Analysis (COA)

For the latest Certificate of Analysis (COA), please email us with your request.

Frequently Asked Questions

How is this raw powder supplied?

QSC raw powder compounds are supplied as bulk crystalline or amorphous powder in a sealed, labelled container at the stated quantity. No reconstitution is required — the powder is ready for weighing and use in research applications.

How should this raw powder be stored?

Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct light. Keep in the original sealed container. Properly stored raw powder remains stable for 2–3 years.

What purity is this QSC raw powder and how is it verified?

All QSC raw powder compounds are tested to ≥99% purity by HPLC on every production batch, with MS-confirmed identity. COA is published on the product page and independently verifiable at verify.janoshik.com.

🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.

🌏 Shipping: China warehouse — 7–14 day global delivery