The Chemical Abstracts Service (CAS) number 841205-47-8 corresponds to Enobosarm, also known by its research names MK-2866 and Ostarine. Enobosarm is classified as a Selective Androgen Receptor Modulator (SARM), a class of compounds designed to selectively target androgen receptors in specific tissues such as muscle and bone, while minimizing effects on other organs. This selective action distinguishes SARMs from traditional anabolic steroids, which can cause widespread androgenic side effects.
Originally developed by GTx, Inc., Enobosarm was intended to address conditions characterized by muscle wasting, such as cancer cachexia, osteoporosis, and sarcopenia. Its ability to promote lean muscle mass and enhance bone density without significant androgenic side effects made it a promising candidate for these therapeutic applications. Unlike anabolic steroids, Enobosarm offers the advantage of oral bioavailability, allowing it to be administered in pill form rather than through injections.
In clinical settings, Enobosarm has undergone various trials to evaluate its efficacy and safety. Studies have demonstrated its potential to increase lean body mass and improve physical function in patients suffering from muscle wasting diseases. However, despite its therapeutic promise, Enobosarm has also gained attention in the fitness and bodybuilding communities as a performance-enhancing agent. Its ability to aid in muscle growth and fat loss without the harsh side effects associated with anabolic steroids has made it a popular, albeit controversial, supplement.
The pharmacokinetics of Enobosarm reveal a half-life of approximately 24 hours, supporting once-daily dosing regimens. Common side effects reported in studies include mild testosterone suppression, which may necessitate post-cycle therapy to restore natural hormone levels. Additionally, regulatory bodies such as the World Anti-Doping Agency (WADA) have banned its use in competitive sports, reflecting concerns about fairness and athlete health.
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