Displaying 9 results of Istradefylline Impurities Istradefylline impurities are unwanted substances that may be present in pharmaceutical formulations of istradefylline, a medication used to treat Parkinson's disease. These impurities can negatively affect the safety, efficacy, and stability of the drug. Therefore, it is important to identify and quantify these impurities to ensure the quality and purity of the medication. Various analytical techniques, such as chromatography and spectroscopy, are used to detect and quantify istradefylline impurities.