Displaying 4 results of Baloxavir Marboxil Impurities Baloxavir Marboxil is an antiviral medication used to treat influenza. However, during the manufacturing process, impurities can be formed which may affect the quality, purity, and efficacy of the drug. These impurities need to be identified and monitored to ensure the safety and efficacy of the final product. Analytical methods such as high-performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS) are used to detect and quantify these impurities.