SKU: 46479641874

OTR-AC (MK-29, OSTARINE-O-ACETATE) Solution, 750mg (25mg/mL)

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Description

OTR-AC (MK-29, OSTARINE-O-ACETATE) Solution, 750mg (25mg/mL)OTR AC (MK 29, OSTARINE O ACETATE) OTR AC, also known as MK 2866 Ester, is MK 2866 (Ostarine) that has undergone esterification (the process of combining an organic acid with an alcohol). This chemical process is used to maximize potency and extend the half life (the time required for a quantity to reduce to half of its initial value) of a substance. Due to this process, the ester version of ostarine has the capacity to remain bioactive ten times

OTR-AC (MK-29, OSTARINE-O-ACETATE)

OTR-AC, also known as MK-2866 Ester, is MK-2866 (Ostarine) that has undergone esterification (the process of combining an organic acid with an alcohol). This chemical process is used to maximize potency and extend the half-life (the time required for a quantity to reduce to half of its initial value) of a substance. Due to this process, the ester version of ostarine has the capacity to remain bioactive ten times longer. This results in benefits such as reduced dosing frequency and more stable blood levels.

How OTR-AC Works 
As the ester version of the selective androgen receptor modulator (SARM) ostarine, OTR-AC is more potent and has longer-lasting effects. By binding to proteins in the body known as androgen receptors, it stimulates the formation of muscle tissue. This, in turn, leads to an increase in muscle mass and strength.

Research on OTR-AC
Increase in Muscle Mass and Strength 
Studies suggest that OTR-AC, along with other SARMs, increases muscle mass and strength by stimulating the formation of muscle tissue:

  • In adult rats, the administration of SARMs, including OTR-AC, resulted in an increase in lean muscle mass and a decrease in body fat percentage.
  • In older male and female rats, OTR-AC administration resulted in increased lean muscle mass, decreased fat mass, and significant improvements in their ability to climb stairs.
  • Studies showed that OTR-AC may help increase muscle mass in rats with cancer cachexia (muscle wasting).
  • In older male and female rats, OTR-AC significantly improved total lean body mass and physical function.
  • In rats that had their ovaries surgically removed, OTR-AC improved muscle tissue.
  • In rats, OTR-AC increased muscle mass by enhancing the production of muscle cells.

Reduction of Body Fat 
Aside from helping gain muscle mass, OTR-AC has also been found to reduce overall body fat:

  • In Phase I and II clinical trials, OTR-AC has demonstrated promising results in increasing total lean body mass, decreasing total tissue fat percentage, and enhancing functional performance.
  • A review of studies showed that OTR-AC can help increase lean body mass and reduce body fat in overweight rats.
  • In a phase 2a study, the administration of OTR-AC along with other SARMs resulted in increased lean fat mass and decreased body fat percentage.
  • In male rats, OTR-AC increased fat cell breakdown by improving lipid metabolism and affecting the release of adiponectin (a hormone that regulates fatty acid breakdown).

Improvement of Bone Health 
Studies suggest that OTR-AC can help stimulate bone formation and protect against bone disorders:

  • In rats that had their ovaries surgically removed, OTR-AC administration resulted in improved bone healing.
  • In a rat model for aged male osteoporosis, both OTR-AC and testosterone treatments improved bone healing by increasing callus volume and area, bone volume and density, and bone width.
  • In a rat model of postmenopausal osteoporosis, high doses of OTR-AC for 5 weeks resulted in increased bone volume, density, and bone mineral density.

 

Reduction of Cholesterol Levels 
Evidence suggests that OTR-AC can help lower cholesterol levels, especially low-density lipoprotein (bad cholesterol):

  • In older male and female rats, OTR-AC administration resulted in a significant reduction in low-density lipoprotein levels.
  • In rats that had their ovaries surgically removed, OTR-AC treatment reduced blood cholesterol levels.

 

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 use. Please use with our DISCLAIMER before ordering.

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SKU: 46479641874

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Richard Stewart
Whiting, US
★★★★★ 5
USB Hub Extraordinaire
Color: Black
This USB Hub has been better than I expected. Purchased for work, it has streamlined my peripherals, keeping limited desk space from becoming problematic. Absolute must in fast paced work environment. Highly recommended.
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Reviewed in the United States on May 29, 2026
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Lexington, US
★★★★★ 5
Very useful USB hub
Color: Black
Works as described. This thing has more inputs than most will ever need. I thought it would be big and bulky but it doesn't take up much space at all. It's super lightweight, except for the power supply but even then, it's not that heavy. I'm currently using some of the USB 3.2 ports and 1 of the USB charging ports with zero issues and now I'm able to plug more devices without fear of my PC struggling to communicate with them all. It's a little pricey compared to other USB hubs but I feel it's totally worth it.
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Reviewed in the United States on December 3, 2025
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Steven
San Leandro, US
★★★★★ 5
Super product.
Size: 12 Outlet, Size: 12 Outlet
Really happy with this strip. It mounts to the wall on the ends, which is MUCH better than attaching with hidden keyholes. Having a lighted switch above each outlet is very useful and saves both power and extends the life of components not in use. The cable retention on both ends is genius. Wish I had one of these years ago
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Reviewed in the United States on April 24, 2026
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SH
Belleville, US
★★★★★ 5
Great power strip for my shop vac and miter saw!
Size: 12 Outlet
Works great in my garage! I currently have it mounted on the wall and have my shop vac and miter saw plugged in. It makes it incredibly easy to turn the master switch on and have my shop vac and miter saw turn on at the same time. When I’m not using the shop vac and miter saw combo, I shut off their individual switches and I’m free to use the other plugs so the individual switches for each outlet are very handy! It’s very durable as I have it mounted on the wall and has an adequate number of outlets for my work bench. The size is just right and it was very easy to mount. My only suggestion is to space the screw holes on the power strip so that it can be mounted between 2 standard wall studs 16 inches on center for unfinished wall mounting. The screw holes didn’t line up like this so I could only put screws on one side of it and I needed to improvise a way to secure the other side of the power strip to the next stud so it was as mounted securely and didn’t move as I plugged and unplugged things.
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Milton Lee
Birmingham, US
★★★★★ 5
Perfect power strip
Size: 6 Outlet
Great value for the money. I love the switches for each plug and has lights at each plug; lets you know when you have a outlet switched on, love that. Well-made, heavy-duty cord and circuit breaker, all high quality.
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Reviewed in the United States on May 26, 2026

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