Displaying 4 results of Mesna Impurities Mesna impurities refer to the unwanted substances present in Mesna, a medication used to prevent and treat bladder irritation caused by chemotherapy drugs. These impurities can affect the safety and efficacy of the medication, and therefore, their levels need to be monitored and controlled during the manufacturing process. They can be generated during synthesis, degradation, or storage of Mesna and can include various chemical compounds, such as related substances, residual solvents, and heavy metals.