Ulipristal is a selective progesterone receptor modulator (SPRM) primarily used for emergency contraception and the treatment of uterine fibroids under brand names such as Ella and Esmya. It works by altering the activity of progesterone, a key hormone involved in ovulation and uterine lining development. Maintaining the pharmaceutical purity of Ulipristal is essential to ensure its therapeutic effectiveness, minimize adverse effects, and meet stringent regulatory standards. Impurity profiling is crucial for detecting and controlling any unwanted substances that may arise during its manufacturing, storage, or degradation. Here are some of its known impurities listed below.
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