LGD-4033 is a novel nonsteroidal, oral SARM that binds to androgen receptor with high affinity (Ki of 1 nM) and selectivity.IC50 value: 1 nM (Ki, for androgen receptor) Target: androgen receptorin vitro: LGD-4033, a novel nonsteroidal oral, selective androgen receptor modulator, binds androgen receptor with high affinity and selectivity.in vivo: LGD-4033 has demonstrated anabolic activity in the muscle, anti-resorptive and anabolic activity in bone, and robust selectivity for muscle versus prostate In animal models. LGD-4033 is well tolerated, has a long elimination half-life and dose-proportional accumulation upon multiple dosing. LGD-4033 is safe, has favorable pharmacokinetic profile, and increases lean body mass even during this short period without change in prostate-specific antigen.

[1]. Basaria S,et al. The safety, pharmacokinetics, and effects of LGD-4033, a novel nonsteroidal oral, selective androgen receptor modulator, in healthy young men. J Gerontol A Biol Sci Med Sci. 2013 Jan;68(1):87-95.