Displaying 21 results of Salmeterol Impurities Salmeterol is a bronchodilator medication used to treat asthma and chronic obstructive pulmonary disease (COPD). However, during the manufacturing process or storage, impurities may develop in the salmeterol compound. These impurities can affect the safety, efficacy, and stability of the medication. Therefore, it is crucial to identify and control the presence of impurities in salmeterol to ensure the quality of the medication. Various analytical techniques such as HPLC, GC-MS, and NMR spectroscopy are used to detect and quantify the impurities in salmeterol.