SKU: 47460479178

OSTARINE (MK-2866) – Solution, 750mg (25mg/mL)

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Description

OSTARINE (MK-2866) – Solution, 750mg (25mg/mL)OSTARINE (MK 2866) Ostarine MK 2886 is a non steroidal Selective Androgen Receptor Modulator (SARM) with tissue selective anabolic and androgenic pharmacological properties. In the scientific literature, it is also known as enbosarm, GTx 024, or S 22. This SARM was originally discovered in 1998 by James T. Dalton, Duane D. Miller, Karen A. Veverka, and their respective research teams at Ohio State University, the University of Tennessee, and GTx. GTx

OSTARINE (MK-2866)

Ostarine MK-2886 is a non-steroidal Selective Androgen Receptor Modulator (SARM) with tissue-selective anabolic and androgenic pharmacological properties. In the scientific literature, it is also known as enbosarm, GTx-024, or S-22.

This SARM was originally discovered in 1998 by James T. Dalton, Duane D. Miller, Karen A. Veverka, and their respective research teams at Ohio State University, the University of Tennessee, and GTx. GTx acquired the licensing rights from these research teams and further sublicensed the development of MK-2886 to Merck & Co.

MK-2886 is one of the first SARMs to be synthesized and studied in both rats and primates, making it one of the most extensively researched SARMs.

In one study focusing on adult rats, specifically their fat cells or adipocytes, the administration of MK-2886 Ostarine reduced the expression of fat-related hormones like leptin and adiponectin mRNA. Researchers concluded that MK-2886 is likely to have an effect similar to that of testosterone on the AR receptors, leading to a reduction in body fat in rats. Source

Another study showed that MK-2886 Ostarine also stimulates bone growth in rats. At the highest dosage, 4 mg/kg, the test subjects exhibited improved bone density, quicker healing time, and higher markers of bone growth hormones such as phosphorus and alkaline phosphatase.

Interestingly, all rats in the research group showed an increase in the weight of the gastrocnemius muscle, even at the lowest dosage of 0.04 mg/kg. Serum cholesterol levels were also lowered in this group, indicating an improved lipid profile. Source

In a subsequent study, similar results were observed; rats with clinically induced osteoporosis showed increased bone density when treated with moderate to high doses of MK-2866. Source

A third study evaluated muscle growth in mice genetically modified to lack traditional androgen receptors. After removing the mice's endogenous testosterone-producing cells, muscle degradation began, and MK-2886 treatment was initiated. These mice showed muscle growth in androgen-sensitive muscles via an alternative pathway, different from that of the traditional androgen receptors. Source

Concentration
25mg/ml.

Half life
24 hours.

DISCLAIMER
This material is sold for use in laboratory research only. Terms of sale apply. Not for human consumption, nor for medical, veterinary or domestic use. Please familiarize yourself with our DISCLAIMER before ordering.

Data Sheet

Ostarine (MK-2866) – Solution, 750mg (25mg/mL)

Application Selective Androgen Receptor Modulator
CAS 841205-47-8
Molar Mass 389.33 g/mol
Chemical Formula C19H14F3N3O3
IUPAC Name ((2S)-3-(4-cyanophenoxy)-N-[4-cyano-3-(trifluoromethyl)phenyl]-2-hydroxy-2-methylpropanamide)
Synonyms Ostarine, Enobosarm, GTx-024, MK-2866
Storage Room temperature
Solubility Soluble in Ethanol, PEG400
Organoleptic Profile Clear liquid
Physical Form Solution in PEG400
Specification 25mg/mL ±5%
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.
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SKU: 47460479178

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M. M.
Waukegan, US
★★★★★ 1
I stops working & doesn't recharge
Color: blue
I just recieved this yesterday 5-23-2026. My new puppy loves it. But after it stopped working and I went to recharge it. it just will not recharge. I currently have it still trying to recharge. so I am not sure what to do other than trying to charge it. I may need to look for something else.
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Reviewed in the United States on May 24, 2026
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Cristie LG
Chelsea, US
★★★★★ 5
This is an awesome toy for dogs and cats!
Color: red
This is such a cool toy for a dog or a cat. I bought it for my 28 pound Aussie doodle. She’s slightly laid up after an injury recently so I’m trying to come up with things she can play with in the house without excessive running. This totally keeps her engaged and she loves it. But I have to watch her because every once in a while she’ll just catch it and try and chew on the ball! But I’ve been sharing it with my neighbor who has a cat. She’s borrowing it today and her cat loves it too! It seems pretty durable overall but it certainly doesn’t want my dogs’s jaws trying to crack it into. You do hear a humming noise while it’s running but I think that’s to be expected. Mostly I just love how much it entertains both dogs and cats!!
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Reviewed in the United States on March 7, 2026
T
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Triton Owner
Fort Morgan, US
★★★★★ 3
Nice Idea But Won't Last With A Frenchie
Color: orange & blue, Color: orange & blue
My dogs loved the balls, however, withing 30 minutes, they were in pieces. Be careful because these parts can become choking hazards. Maybe they should try to make them a bit more sturdy, then I would buy again. Wish I could give them more stars because I liked them and the dogs did too.
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Reviewed in the United States on June 3, 2026
M
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Marjorie
Alexandria, US
★★★★★ 2
Great concept not great product.
Color: red
It worked great for the first 20 minutes in the first day. Now my dog gets it and runs with it in her mouth and there’s no more chase. She also ripped off the flap that hides the USB port on day one. Today is day two and I think I want to return it but she still loves it. I’d only use with supervision though bc it’s already falling apart. She’s only 10 months old and a 9 lb multipoo.
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Reviewed in the United States on February 11, 2026
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Amy C
Lexington, US
★★★★★ 4
Not a chew toy
Color: red&green
Our dogs love these! The dogs play for about a half hour then they get tired ,they pick it up by the string and toss it around , only important thing, supervise play time !!! This will break if chewed on , this is not a chew toy , put away once your dogs are done with it .
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Reviewed in the United States on January 15, 2026

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