2-[2-Methoxy-4-[[[(2-methylphenyl)sulfonyl]amino]carbonyl]phenyl]methyl] Zafirlukast is an impurity of Zafirlukast (Z125000); a potent, selective and orally active cysteinyl leukotriene type 1 receptor antagonist. Also used as an antiasthmatic.
Molecular Formula:C47H48N4O10S2
Molecular Weight:893.03
Storage and Stability:Store at -20°C. For maximum recovery of product, centrifuge the original vial prior to removing the cap.