Ostarine (GTx-024, MK-2866 )
Catalog No.S1174 Synonyms: Enobosarm, ostarine
Molecular Weight(MW): 389.33
MK-2866 (GTx-024) is a selective androgen receptor modulator (SARM) with Ki of 3.8 nM, and is tissue-selective for anabolic organs. Phase 3.
Purity & Quality Control
Choose Selective Androgen Receptor Inhibitors
|Description||MK-2866 (GTx-024) is a selective androgen receptor modulator (SARM) with Ki of 3.8 nM, and is tissue-selective for anabolic organs. Phase 3.|
|Features||The most potent and tissue-selective in vivo activity of SARMs to date, with favorable pharmacokinetic properties.|
Ostarine at the concentration of 10 nM modulates the transcriptional activity of AR in CV-1 cells cotransfected with a human AR expression vector, a luciferase reporter vector, and a control β-galactosidase vector, with 94%-100% relative activity of the transcriptional activation observed for 1 nM DHT.  
|In vivo||After intravenous administration of Ostarine at a single dose of 10 mg/kg, plasma concentration of Ostarine declines slowly, exhibiting a longer terminal half-life of 6.0 hours, as compared to that of other related cyano/nitro group-substituted SARMs with terminal halflives of 2.6-4.0 hours. Ostarine exhibits significantly androgenic and anabolic activity by stimulating the growth of prostate, seminal vesicles, and levator ani muscle when administered in castrated male rats; Ostarine is more potent than other cyano/nitro group-substituted SARMs. Ostarine restores the weight of the prostate to 39.2%, and seminal vesicle 78.8%, and stimulates the growth of levator ani muscle to a greater extent of 141.9% as compared with that of androgenic organs. Ostarine exhibits the highest in vivo androgenic and anabolic activity of any AR nonsteroidal agonist examined to date, with ED50 values of 0.12, 0.39 and 0.03 mg/day in prostate, seminal vesicles, and levator ani muscle, respectively, being 4 times as potent as testosterone propionate (TP) in levator ani muscle. At low dose of 0.03 mg/day, Ostarine is sufficient to exert efficacious and selective activity in anabolic tissues. |
|In vitro||DMSO||78 mg/mL (200.34 mM)|
|Ethanol||78 mg/mL (200.34 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
1% DMSO+30% polyethylene glycol+1% Tween 80
For best results, use promptly after mixing.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT03566290||Terminated||Stress Urinary Incontinence||GTx||June 28 2018||Phase 2|
|NCT03508648||Terminated||Stress Urinary Incontinence||GTx||May 28 2018||Phase 2|
|NCT03241342||Completed||Stress Urinary Incontinence||GTx||August 21 2017||Phase 2|
|NCT02746328||Completed||ER+ and AR+ Breast Cancer||GTx||April 2016||Phase 2|
|NCT02658448||Completed||Stress Urinary Incontinence||GTx||January 2016||Phase 2|
|NCT02463032||Active not recruiting||ER+ and AR+ Breast Cancer||GTx||August 2015||Phase 2|
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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Frequently Asked Questions
Regarding S1174, can you tell me if this is the (L) enantiomer, (R) enantiomer or a mixture of both?
S1174 Ostarine(MK-2866) is (S) enantiomer.