Ostarine-O-Acetate (OTR-AC) – Powder, 1g
Data Sheet
| Application | Selective Androgen Receptor Modulator |
| CAS | 1025658-44-9 |
| Molar Mass | 431.37 g/mol |
| Chemical Formula | C21H16F3N3O4 |
| IUPAC Name | 5-(1H-pyrazol-5-yl)-1-[2-[4-(trifluoromethoxy)phenoxy]ethyl]indole-2-carboxylic acid |
| Synonyms | OTR-AC, Ostarinyl Acetate (MK2886 acetate), Ostarine acetate (MK2886 acetate), Ostarine acetate ester (MK2886 acetate ester), Ostarine acetic acid ester (MK2886 Acetic acid ester) |
| Storage | Store at room temperature, tightly sealed, away from heat, light and moisture. |
| Solubility | Soluble in PEG400 |
| Organoleptic Profile | Fine, off-white powder |
| Physical Form | Solid |
| Specification | ≥98% |
| Terms | This material is sold for laboratory research use only. Terms of sale apply. Not for human consumption, nor medical, veterinary, or household uses. Please familiarize yourself with our Terms & Conditions prior to ordering. |
Esterified Selective Androgen Receptor Modulator for Research Use
Ostarine-O-Acetate (OTR-AC) is a research-grade esterified selective androgen receptor modulator (SARM) widely studied for its potential relevance in androgen receptor signaling, anabolic pathway investigation, musculoskeletal biology, and modified-delivery receptor modulation research. As an acetate ester derivative associated with Ostarine (MK-2866), OTR-AC has attracted scientific interest for its distinct structural profile and investigational relevance in tissue-selective anabolic signaling models.
Researchers have investigated OTR-AC in studies involving lean tissue pathways, receptor-mediated anabolic activity, body composition models, and signaling kinetics associated with esterified SARM analogues. Its modified profile has made it a notable subject in advanced SARM research.
Supplied in 1g powder format for laboratory and analytical research applications.
Common Research Areas
- Androgen Receptor Signaling Research
- Lean Tissue and Anabolic Pathway Studies
- Musculoskeletal Biology Models
- Body Composition Investigation
- Modified-Delivery Receptor Modulation Research
How OTR-AC Works
Ostarine-O-Acetate has been studied for its selective interaction with androgen receptor pathways involved in anabolic signaling and tissue-selective modulation. Its acetate ester modification has drawn scientific interest for potential differences in delivery characteristics and signaling kinetics compared with non-esterified Ostarine research models.
Researchers have explored its relevance in models involving lean tissue signaling, musculoskeletal biology, and receptor-mediated anabolic pathways.
Research Overview
OTR-AC has been investigated across a range of research models involving androgen receptor biology, anabolic signaling, and modified-delivery receptor modulation.
Areas of scientific interest include:
- Selective androgen receptor pathway studies
- Lean tissue signaling investigations
- Musculoskeletal biology research models
- Body composition pathway studies
- Esterified SARM signaling research
Its structural profile continues to make it a significant compound in SARM science.
OTR-AC vs Related Compounds
OTR-AC vs Ostarine (MK-2866)
OTR-AC is often researched as an esterified derivative associated with altered delivery characteristics, while Ostarine serves as the foundational non-esterified compound.
OTR-AC vs RAD150
Both have attracted interest as esterified SARM analogues, though RAD150 is associated with RAD140-derived research, while OTR-AC is related to Ostarine-based models.
Frequently Asked Questions
What is OTR-AC studied for?
It is commonly researched in androgen receptor signaling, anabolic pathways, musculoskeletal models, and esterified receptor modulation studies.
What is Ostarine-O-Acetate?
It is an acetate ester derivative associated with Ostarine (MK-2866) research.
How should OTR-AC powder be stored?
Research powders are generally stored in a cool, dry environment protected from heat and moisture.







