YK11 SARM POWDER – 1000MG / 1 GRAM

YK-11 is an advanced, steroidal selective androgen receptor modulator that exhibits a unique dual mechanism of action by functioning directly as a potent myostatin inhibitor. Presented as a premium raw powder base at $\ge$99% pure (LC-MS), it ensures maximum compound integrity and formulation flexibility for complex scientific evaluations. YK-11 works by selectively binding to androgen receptors while aggressively stimulating the cellular expression of follistatin, an endogenous glycoprotein that suppresses myostatin activity. In elite genetic and cellular development research, YK-11 raw powder is intensely investigated for its ability to foster rapid, unrestricted skeletal muscle tissue accretion and deep bone mineral preservation beyond traditional regulatory limitations.