Displaying 14 results of Propafenone Impurities Propafenone is an antiarrhythmic drug used to treat irregular heartbeats. Impurities can be present in propafenone due to various reasons, including the manufacturing process or degradation over time. These impurities can affect the safety and efficacy of the drug, and therefore, their identification and quantification are essential. Propafenone impurities can be detected and analyzed using various techniques such as high-performance liquid chromatography (HPLC), gas chromatography (GC), and mass spectrometry (MS).