Ostarine (MK-2866)

Ostarine, also referred to as MK 2866, is a common Selective Androgen Receptor Modulator (SARM). MK 2866 targets the specific receptors. These receptors may include those localized in skeletal muscle and osseous tissues. During the mechanism, this compound may engage endogenous androgenic signaling cascades in experimental systems. This activity has been linked with alterations in muscle morphology, bone matrix mineralization, and other physiological parameters.

Working Mechanism of Ostarine (MK-2866)

Ostarine (MK-2866) functions as a selective androgen receptor modulator that binds with high affinity to androgen receptors in experimental systems. This leads to receptor activation and dissociation of associated proteins. The receptor–ligand complex then translocates into the nucleus, where it interacts with androgen response elements to regulate gene transcription.

This process modulates downstream signaling pathways, including ERK1/2 and PI3K/Akt/mTOR, which are associated with cellular proliferation, differentiation, and protein synthesis in research models.

Chemical Properties of Ostarine 

• Chemical Formula: C19H14F3N3O3
• Synonym: Ostarine (MK-2866), Mk2866, Ostarine, GTx-024, Enobosarm. 
• IUPAC-Name: (2S)-3-(4-cyano-2,3,5,6-tetradeuteriophenoxy)-N-[4-cyano-3-(trifluoromethyl)phenyl]-2-hydroxy-2-methylpropanamide
• Molar Mass: 393.4 g/mol
• CAS Number: 841205-47-8
• PubChem CID: 45107712
• Shelf Life: 36 months

Research Findings on Ostarine (MK-2866)

Ostarine is studied in experimental models for its interaction with androgen receptor signaling in cellular systems. Studies show that it binds with strong affinity to androgen receptors and modulates pathways involved in cell proliferation and differentiation. For example, in vitro and computational research have observed its binding behavior and potential influence on androgen receptor–related signaling in tumor cell models.

Another key research application of Ostarine involves its role in muscle cell biology and differentiation studies. Experimental findings show that it activates androgen receptor–mediated pathways such as ERK1/2 signaling. This results in increased expression of myogenic regulatory factors (e.g., MyoD and myogenin) in cultured muscle cells. These findings support its use in laboratory research focused on cellular differentiation, gene expression regulation, and skeletal muscle signaling mechanisms.

Why Choose BehemothLabz to Buy Ostarine (MK-2866) Liquid? 

When it comes to buying Ostarine Mk-2866 online, dozens of suppliers are present that offer Ostarine (Enobosarm) for sale. However, very few suppliers are trustworthy and reliable. Behemoth Labz is one of them and stands out at the top in the online market. 

BehemothLabz not only offers Ostarine for sale but also ensures quality and purity. On top of that, it offers Ostarine for sale in all forms, like liquid, capsules, and also parenteral solution. The availability of all SARMs has made this place an excellent and top-tier seller. Moreover, with fast shipping mechanisms and excellent customer satisfaction, you can trust BehemothLabz. 

Note: For researchers looking to expand their studies, BehemothLabz also offers MK-2866 for sale. You can also check out LGD-4033 Ligandrol and OTR-AC Liquid to discover more research compounds tailored to various experimental needs.

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All BehemothLabz products are strictly for LABORATORY AND RESEARCH PURPOSES ONLY. They are not to be used for any human or veterinary purposes.

Reference Links

PubChem. (2026). Ostarine(MK-2866). Nih.gov; PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/Ostarine_MK-2866

‌Leciejewska, N., Kołodziejski, P. A., Sassek, M., Nogowski, L., Małek, E., & Pruszyńska-Oszmałek, E. (2022). Ostarine-Induced Myogenic Differentiation in C2C12, L6, and Rat Muscles. International Journal of Molecular Sciences, 23(8), 4404. https://doi.org/10.3390/ijms23084404

Sharma, S., Saini, S., Chadha, V. D., Saini, A., & Dhawan, D. K. (2025). A Computational and In Vitro Appraisal of Ostarine to Target Androgen Receptor in Glioma C6 Cells. Cell Biochemistry and Biophysics, 83(4), 4695–4709. https://doi.org/10.1007/s12013-025-01797-0

Leciejewska, N., Kołodziejski, P. A., Sassek, M., Nogowski, L., Małek, E., & Pruszyńska-Oszmałek, E. (2022). Ostarine-Induced Myogenic Differentiation in C2C12, L6, and Rat Muscles. International Journal of Molecular Sciences, 23(8), 4404. https://doi.org/10.3390/ijms23084404