Lupeol-d3 is the deuterium labeled Lupeol (HY-N0790). Lupeol is an active pentacyclic triterpenoid, has anti-oxidant, anti-mutagenic, anti-tumor and anti-inflammatory activity. Lupeol is a potent?androgen receptor?(AR)?inhibitor and can be used for?cancer?research, especially prostate?cancer?of androgen-dependent phenotype (ADPC) and castration resistant phenotype (CRPC)[1].