Androstenediol is a steroid hormone that is used in the treatment of various medical conditions. However, its purity is crucial for its effectiveness and safety. Impurities in Androstenediol can cause adverse effects and compromise its therapeutic value. Therefore, it is essential to monitor and control the level of impurities in Androstenediol to ensure its quality and efficacy. Some common impurities in Androstenediol include 5α-androstane-3,17-dione, 5β-androstane-3,17-dione, and 5α-androstane-3β,17β-diol.