Displaying 8 results of Ambrisentan Impurities Ambrisentan Impurities refer to the various impurities that may be present in the drug substance Ambrisentan. These impurities can be related to the starting materials, synthetic intermediates or degradation products. It is important to monitor and control the levels of impurities in Ambrisentan to ensure its safety and efficacy. Regulatory authorities have established limits for these impurities, which must be complied with during the manufacturing process.