OTR-AC, also called MK-2866 Ester, is MK-2866 (Ostarine) which has undergone esterification during chemical synthesis to maximise potency, biodistribution and half-life. The esterification of anabolic agents results in at least a 10-fold increase in half-life, which means that the active ingredient has the potential to remain bioactive ten times longer. This results in numerous benefits, such as decreased dosing frequency …