Salmeterol with CAS No: 89365-50-4 is an impurity standard of Salmeterol. Salmeterol is a long-acting beta2-adrenergic agonist (LABA) bronchodilator used in the treatment of asthma and chronic obstructive pulmonary disease (COPD). It works by stimulating the beta2-adrenergic receptors in the smooth muscle of the airways, leading to bronchodilation. Salmeterol has a prolonged duration of action, allowing for twice-daily dosing, and it is often used in combination with an inhaled corticosteroid for the maintenance treatment of asthma and COPD. The combination helps to control symptoms and improve lung function. Its important to note that salmeterol should not be used as a rescue inhaler for acute bronchospasm; instead, it is intended for regular, ongoing management to prevent exacerbations. Buy high quality Salmeterol from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Salmeterol