Ostarine (MK-2866)
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What is Ostarine (MK-2866)?
Chemical Structure of Ostarine (MK-2866)
MK-2866 has the molecular formula C19H14F3N3O3 and a molecular weight of approximately 389.32 g/mol. Structurally, it belongs to the aryl-propionamide class of SARMs, featuring a cyanophenyl group and a trifluoromethyl-substituted phenyl ring connected through an amide linkage. This configuration is what allows the molecule to bind selectively to androgen receptors in musculoskeletal tissue while exhibiting comparatively lower affinity for receptors in other organ systems, a property central to its research utility. The compound is registered under CAS number 841205-47-8 and is typically supplied as a fine crystalline powder or pre-formulated solution, stable when stored in a cool, dry location away from direct light.
What Are the Effects of Ostarine (MK-2866)?
In preclinical and laboratory research, MK-2866’s selective binding to androgen receptors has been studied for its downstream effects on lean muscle tissue preservation and bone mineral density in animal models. Research has explored its relevance to models of muscle wasting associated with aging, illness, and disuse, as well as its comparative tissue-selectivity relative to non-selective androgenic compounds. Some studies have also investigated its effects on markers of strength and physical function in research subjects, alongside its influence on lipid parameters and hormonal feedback pathways at the cellular level. As with other SARM compounds under investigation, research protocols typically monitor for changes in endogenous hormone signaling as part of standard experimental design.
Ostarine (MK-2866)
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