Cisapride impurities refer to the unwanted substances that can be found in samples of cisapride, a medication used to treat gastrointestinal disorders. These impurities may be present due to the manufacturing process or degradation over time. It is important to identify and quantify these impurities as they can potentially affect the safety and efficacy of the medication. Various analytical techniques are used to detect and measure cisapride impurities, including chromatography and spectroscopy.