Leukotriene Antagonists

Zafirlukast

Products Zafirlukast was commercially available in the form of film-coated tablets (Accolate, off label). It was approved in many countries in 1998. It was discontinued from distribution in 2019. Montelukast is a suitable substitute. Structure and properties Zafirlukast (C31H33N3O6S, Mr = 575.7 g/mol) exists as a fine, white to pale yellow, amorphous powder that is … Zafirlukast

Montelukast

Products Montelukast is commercially available as film-coated tablets and as granules and chewable tablets for children (Singulair, generic). It has been approved in many countries since 1998. Structure and properties Montelukast (C35H36ClNO3S, Mr = 586.18 g/mol) is a chloroquinoline derivative. It is present in drugs as montelukast sodium, a white crystalline powder that is readily … Montelukast