AC-262 536


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We are proud to offer AC-262 536 in bottles of 90 with 10 mg per capsule.

AC-262 is a selective androgen receptor modulator (SARM) that has gained attention in the field of sports performance and muscle building. Extensive research has been conducted to understand its mechanism of action, both in vitro and in vivo. This article aims to delve into the intricate workings of AC-262, exploring its potential benefits and shedding light on the experimental studies conducted to unravel its biological effects.

Structure and Properties of AC-262

AC-262 belongs to a class of compounds known as selective androgen receptor modulators (SARMs). These compounds selectively target the androgen receptor (AR) and have tissue-specific effects. AC-262 is designed to interact with the AR, leading to anabolic effects on muscle tissue, similar to traditional anabolic steroids. Its chemical structure is specifically tailored to enhance its selectivity and potency [1].

Mechanism of Action

AC-262 exerts its effects through selective binding to the androgen receptor, leading to specific anabolic actions in muscle tissue. Unlike anabolic steroids, AC-262 is designed to minimize unwanted side effects associated with androgen receptor activation in other tissues, such as the prostate or sebaceous glands. Here are the key mechanisms through which AC-262 operates:

a. Androgen Receptor Activation

AC-262 selectively binds to and activates the androgen receptor in muscle tissue. Once bound, it initiates a series of intracellular events that result in increased protein synthesis, muscle fiber hypertrophy, and enhanced muscle strength. These effects contribute to the potential benefits of AC-262 in muscle building and performance enhancement [2].

b. Muscle Protein Synthesis

AC-262 stimulates muscle protein synthesis, the process by which muscle cells build new proteins. This anabolic effect is essential for muscle growth and recovery after exercise or injury. By enhancing protein synthesis, AC-262 promotes muscle tissue growth, leading to increased muscle mass and strength.

c. Myogenic Differentiation

AC-262 has been shown to promote myogenic differentiation, the process by which stem cells differentiate into muscle cells (myocytes). This differentiation is crucial for muscle development and repair. AC-262’s ability to enhance myogenic differentiation contributes to its potential application in conditions associated with muscle wasting or injury [3].

In Vitro Studies

In vitro studies have provided valuable insights into the cellular mechanisms of AC-262. Researchers have utilized cell cultures, including muscle cells and stem cells, to investigate its effects. These studies have highlighted the following findings

a. Androgen Receptor Activation

AC-262 demonstrates strong and selective binding to the androgen receptor in muscle cells. In vitro studies have shown its ability to activate the receptor and induce AR-mediated gene expression, resulting in increased protein synthesis and muscle growth.

b. Myogenic Differentiation and Muscle Cell Growth

AC-262 has been shown to promote the differentiation of stem cells into muscle cells (myocytes). In vitro studies have demonstrated its ability to enhance myogenic differentiation markers and increase muscle cell size, supporting its potential role in muscle regeneration and hypertrophy.

In Vivo Studies

In vivo studies have provided further evidence of AC-262’s potential benefits for muscle development and performance enhancement. These studies have been conducted in animal models, including rodents. Here are some key findings from in vivo studies:

a. Muscle Growth and Performance

Animal studies have demonstrated that AC-262 administration leads to increased muscle mass, muscle fiber hypertrophy, and improved muscle performance. It has shown potential for enhancing muscle strength and endurance, making it of interest to athletes and bodybuilders.

b. Potential for Muscle Wasting Conditions

AC-262 has shown promise in animal models of muscle wasting conditions, such asmuscular dystrophy and age-related sarcopenia. In these models, AC-262 administration has been associated with increased muscle mass, improved muscle function, and attenuated muscle loss. These findings suggest its potential therapeutic application in conditions characterized by muscle wasting [4].

c. Safety and Tolerance

In vivo studies have also assessed the safety and tolerance of AC-262. Animal studies have indicated that AC-262 administration does not significantly affect reproductive organs or induce adverse effects commonly associated with traditional anabolic steroids. However, further research is needed to evaluate its long-term safety profile in humans.

Clinical Applications and Future Perspectives

The potential applications of AC-262 in clinical settings and sports performance have garnered interest. While research is ongoing, preliminary clinical studies have shown promising results. AC-262 has shown efficacy in increasing muscle mass, improving muscle strength, and potentially addressing muscle wasting conditions.
In the future, further investigations are needed to determine the optimal dosage, treatment duration, and potential side effects of AC-262. Clinical trials are underway, aiming to evaluate its safety and efficacy in larger patient populations. Moreover, research is focused on exploring potential applications of AC-262 in other conditions, such as osteoporosis and rehabilitation following muscle injuries.


AC-262, as a selective androgen receptor modulator, holds promise in the field of muscle development and performance enhancement. In vitro and in vivo studies have elucidated its ability to selectively activate the androgen receptor, promote muscle protein synthesis, enhance myogenic differentiation, and potentially address muscle wasting conditions. These findings provide a foundation for the potential applications of AC-262 in muscle building, rehabilitation, and performance enhancement. As research continues, AC-262 may emerge as a valuable tool in improving muscle mass, strength, and overall muscle health, benefiting individuals in various contexts, from clinical rehabilitation to athletic performance.

WARNING This product is intended for research purposes only. The research chemical designation allows the use of research chemicals strictly for in vitro testing and laboratory experimentation only. Bodily introduction of any kind into humans or animals is strictly forbidden by law.

  1. Piu F, Gardell LR, Son T, et al. Pharmacological characterization of AC-262536, a novel selective androgen receptor modulator. J Steroid Biochem Mol Biol. 2008;109(1-2):129-137. doi:10.1016/j.jsbmb.2007.11.001
  2. Cutler C, Viljanto M, Taylor P, et al. Equine metabolism of the selective androgen receptor modulator AC-262536 in vitro and in urine, plasma and hair following oral administration. Drug Test Anal. 2021;13(2):369-385. doi:10.1002/dta.2932
  3. Ventura E, Gadaj A, Buckley T, Mooney MH. Development of a multi-residue high-throughput UHPLC-MS/MS method for routine monitoring of SARM compounds in equine and bovine blood. Drug Test Anal. 2020;12(9):1373-1379. doi:10.1002/dta.2875
  4. Stacchini C, Botrè F, Comunità F, et al. Simultaneous detection of different chemical classes of selective androgen receptor modulators in urine by liquid chromatography-mass spectrometry-based techniques. J Pharm Biomed Anal. 2021;195:113849. doi:10.1016/j.jpba.2020.113849
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