- Always ≥ 99% purity
- Manufactured and sealed in a sterile environment
- Up to 70% more value in each bottle
- Each batch is independently double-tested
MK-29, also known as OTR-AC or Ostarine-O-Acetate, is a chemically modified form of MK-2866 (Ostarine) featuring an acetate ester. This structural alteration is designed to improve pharmacokinetics, particularly by enhancing lipid solubility and cellular membrane permeability, which may lead to faster absorption and greater oral bioavailability in research models.
MK-29 retains the selective androgen receptor binding properties of Ostarine, acting as a non-steroidal SARM that promotes anabolic activity in muscle and bone, while minimizing androgenic effects in reproductive tissues. The esterification with an acetate group functions as a prodrug mechanism, gradually releasing the active MK-2866 after administration.

In laboratory research, MK-29 has shown potential to:
Although direct human data is lacking, MK-29 is of interest for studies seeking controlled-release SARMs, improved oral dosing efficiency, and enhanced performance of known actives like Ostarine.
⚠ Important Note: This product is supplied strictly for laboratory research use only. It is not approved for human consumption or therapeutic use. Not intended to diagnose, treat, cure, or prevent any disease.
| Delivery - UK | Next working day |
|---|---|
| Delivery - Worldwide | 5-7 working days + customs processing time (varies) |
| Stock levels | Low |
| CAS Number | Derived compound |
| Molecular formula | C21H18F3N3O4 |
| Molar mass | 433.39 g/mol |
| Purity | ≥99% (see HPLC and COA documentation) |
| Concentration | 10 mg |
| Half-life | ~24-36 hours |
| Storage | 2 years at 20°C |
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