OTR-AC (Ostarine-O-Acetate) Research Reference at Chemyo
This is the Chemyo research reference for OTR-AC (Ostarine-O-Acetate): what the compound is, its molecular identity, the formats in stock and the published batch testing. OTR-AC is supplied for research use only; nothing on this page is dosing, administration or clinical guidance.
What is OTR-AC?
OTR-AC is described as the O-acetate ester of Ostarine (MK-2866). Adding an acetate group to a parent molecule is a standard way of modifying solubility and stability, and OTR-AC is offered to laboratories that want to compare an esterified form with the well-characterised parent SARM.
There is essentially no peer-reviewed literature on OTR-AC itself, so its expected behaviour is inferred from enobosarm research. That makes analytical confirmation the key point: Chemyo publishes FTIR and HPLC data for each OTR-AC lot so researchers can confirm they have the ester and not the parent compound.
Molecular identity
| Molecular formula | C21H16F3N3O4 |
| Molar mass | 431.37 g/mol |
| Synonyms | Ostarine Acetate, MK-2866 Acetate Ester |
| Research class | Ester derivative of Ostarine research compound |
Where to buy OTR-AC for research
Searches for OTR AC SARM turn up many listings with no batch data. At Chemyo every lot of OTR-AC below has its identity, purity results published, so you can check the material before you order it.
- 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.
OTR-AC FAQ
What is OTR-AC?
An acetate ester derivative of Ostarine (MK-2866) offered as a research powder.
How is OTR-AC different from Ostarine?
It carries an O-acetate group, which changes physical properties such as solubility. Its biological profile has not been characterised in published studies.
Is there published research on OTR-AC?
No meaningful peer-reviewed literature exists; it is an exploratory compound.
Which OTR-AC format is available?
A 1 g powder with batch FTIR and HPLC data.
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.