MK-2866

MK-2866 Product Description — Research Use Only

MK-2866, also known as Ostarine or Enobosarm, is a research compound studied as a selective androgen receptor modulator, commonly known as a SARM. It is not a peptide, but it is often grouped within peptide and research-compound catalogs because of its use in androgen-receptor, lean-mass, muscle-support, and body-composition research.

Research on MK-2866 has most commonly focused on androgen receptor activity, lean-mass markers, muscle-support pathways, physical-function research, bone-support signaling, body-composition markers, and tissue-selective anabolic activity. Published research describes Enobosarm/MK-2866 as a nonsteroidal SARM studied for lean body mass and physical-function outcomes in controlled research settings.

MK-2866 is commonly studied for:

• Androgen receptor activity — how the compound interacts with androgen receptor pathways

• Lean-mass research — markers related to lean tissue and body-composition changes

• Muscle-support pathways — signals connected to muscle maintenance, repair, and protein balance

• Physical-function research — markers connected to strength, movement, and performance output

• Bone-support pathways — research involving bone maintenance, density, and structure

• Tissue selectivity — how activity may differ between muscle, bone, and other tissues

• Hormone-response markers — how androgen-related pathways influence biological signaling

MK-2866 is commonly studied because SARMs are designed to activate androgen receptor pathways in a more tissue-selective way than traditional steroidal androgens. In a placebo-controlled Phase II study, Enobosarm was associated with improvements in lean body mass and physical function markers in older adults, while broader SARM literature describes this class as being investigated for muscle and bone-related anabolic activity.

For research use only. Not for human consumption, medical use, diagnostic use, or therapeutic application.