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
- Tablet — 25mg per tablet, 100-tablet bottle
- CAS Number
- 841205-47-8
- Molecular Formula
- C₁₉H₁₄F₃N₃O₃ Molecular Weight 389.3 g/mol
- Compound Type
- Selective Androgen Receptor Modulator (SARM)
- Purity
- ≥99% by HPLC — every batch
- Identity
- MS molecular weight confirmed — every batch
- COA
- Janoshik-independent, publicly verifiable
- Manufacture
- In-house synthesis — Qingdao, China
- Storage
- Room temperature sealed | cool, dry storage
- Shelf Life
- 24 months unopened
Frequently Asked Questions
How are Vesta research tablets supplied?
Vesta 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 research tablets 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 are Vesta research tablets and how is it verified?
Vesta 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 Vesta’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
International shipping: 7–14 days