What is Ostarine (MK-2866)?
Ostarine (MK-2866, Enobosarm) is one of the most extensively studied SARMs. Binds the androgen receptor with high affinity and selectivity, producing anabolic effects in muscle and bone with minimal androgenic activity in prostate and other tissues. Well-characterised SARM reference compound for receptor selectivity research, muscle wasting models, and comparative SARM pharmacology. Research use only.
Research Applications
SARM Reference Compound
Most-studied SARM — reference standard for AR selectivity profiling and assay validation
Muscle Wasting & Sarcopenia
Lean mass preservation, nitrogen retention, cancer cachexia and age-related models
Bone Density Research
Osteoblast stimulation, BMD maintenance, osteoporosis prevention models
Minimal Androgenic Activity
Low prostate stimulation vs full AR agonists — selectivity ratio quantification
Comparative SARM Research
MK-2866 vs LGD-4033, RAD-140, S23 — potency, selectivity, suppression profiles
Quick Specs
| Form |
C₁₉H₁₄F₃N₃O₃ |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
841205-47-8 |
| Molecular Weight |
MS molecular weight confirmed — every batch |
| Specification |
≥99% by HPLC — every batch |
| Shelf Life |
24 months unopened |
| Storage |
Room temperature sealed | cool, dry storage |
| Manufacture |
In-house synthesis — Qingdao, China |
| Brand |
China |
Frequently Asked Questions
How do I reconstitute this peptide?
QSC research tablets are supplied as pre-dosed oral tablets at the stated concentration. No reconstitution is required. Each tablet is compressed at uniform dose for consistent dosing in research applications.
How should this peptide be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct sunlight. Keep in the original container. Properly stored tablets remain stable for 2–3 years.
What purity is this QSC compound and how is it verified?
QSC research tablets contain active ingredient at ≥99% HPLC purity before tableting, with MS-confirmed identity on every batch. 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.
🌍 Domestic shipping: 🇺🇸 USA 5–7 days
🌏 International shipping: 7–14 days
⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION
QSC products are strictly for in vitro and in vivo laboratory research.
Safety & Handling
🚫
Not for Human Use
These compounds are for research only.
🥽
PPE Required
Always use appropriate protective equipment.
❄️
Storage Compliance
Follow product-specific storage conditions.
Product-Specific Storage
Room temperature sealed | cool, dry storage
