Montelukast EP Impurity H with CAS No: 851755-56-1 is an impurity standard of Montelukast. Montelukast is a medication primarily used to manage and prevent asthma symptoms and to relieve symptoms of allergic rhinitis.Montelukast is belongs to a class of drugs known as leukotriene receptor antagonists.Montelukast is available in tablet, chewable tablet, and granule forms Buy high quality Montelukast EP Impurity H from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Montelukast EP Impurity H