Ostarine (MK-2866) for Sale at Chemyo
This is the Chemyo research reference for Ostarine MK-2866: what the compound is, its molecular identity, the formats in stock and the published batch testing. MK-2866 is supplied for research use only; nothing on this page is dosing, administration or clinical guidance.
What is MK-2866?
MK-2866 is the development code for Ostarine, also called enobosarm or GTx-024. It is a non-steroidal selective androgen receptor modulator developed by GTx Inc. and is one of the most studied SARMs, because it progressed further in clinical research than almost any other member of the class.
Enobosarm was evaluated in phase 2 and phase 3 trials on muscle wasting in people with cancer (cancer cachexia) and later in androgen-receptor-positive breast cancer. It has not been approved as a medicine, and anti-doping laboratories routinely test for it. Its published clinical data make it a common reference compound when SARMs are compared in the laboratory.
Molecular identity
| CAS number | 841205-47-8 |
| Molecular formula | C19H14F3N3O3 |
| Molar mass | 389.33 g/mol |
| Synonyms | Ostarine, Enobosarm, GTx-024, S-22 |
| Research class | SARM research compound |
Where to buy MK-2866 for research
Searches for Ostarine for sale turn up many listings with no batch data. At Chemyo every lot of MK-2866 below has its identity, purity and, for solutions, concentration results published, so you can check the material before you order it.
- MK2866 | Ostarine MK-2866 SARM Solution 25mg/ml – 50 ml
Liquid solution · batch FTIR and HPLC report plus concentration assay
- Ostarine MK-2866 SARM Powder – 1g
Research powder · batch FTIR and HPLC report
- MK-2866 and GW-501516 Value Pack
Value pack · batch FTIR and HPLC report
- OTR-AC | Ostarine-O-Acetate Powder – 1g
Research powder · batch FTIR and HPLC report
Browse all SARM solutions, research powders and value packs.
Quality control
Every batch is independently tested: FTIR for identity, HPLC for purity and, for solutions, a separate concentration assay. Reports are listed by batch number in the Chemyo lab reports library, and our quality control process explains each step. To check a certificate yourself, see how to read a SARM COA.
MK-2866 FAQ
Is Ostarine the same as MK-2866?
Yes. Ostarine, MK-2866, enobosarm and GTx-024 all refer to the same compound, CAS 841205-47-8.
What clinical research exists on Ostarine?
Enobosarm reached phase 3 trials for cancer-related muscle wasting and was later studied in breast cancer. None of these programmes led to an approved product.
What is OTR-AC?
OTR-AC is described as an O-acetate ester of Ostarine. It has far less literature than the parent compound and is stocked separately as a powder.
Which MK-2866 formats does Chemyo stock?
A 25 mg/ml solution in 50 ml, a 1 g Ostarine powder and value packs with MK-677 or GW-501516.
Related research references
Compliance: all Chemyo products are supplied for laboratory research only and are not for human or veterinary use. Read the terms and conditions before ordering.