Hydroxyflutamide (HFT) is the active metabolite of Flutamide (HY-B0022) and exhibits oral activity. Hydroxyflutamide is a potent androgen receptor antagonist with an IC50 of 700 nM. Hydroxyflutamide can affect embryonic development and reproductive tract development in mice. Additionally, Hydroxyflutamide can enhance the efficacy of Bacillus Calmette-Guerin (BCG) to better inhibit the progression of bladder cancer. Hydroxyflutamide can be used in research related to tumors and reproductive diseases[1][2][3][4][5].