zafirlukast and its Impurities
Zafirlukast is used to prevent asthma symptoms and to decrease the number of asthma attacks in people 5 and older. It is an orally administered leukotriene receptor antagonist. Reference standards of Zafirlukast API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
Dicyclopentyl (3,3'-((2-methoxy-4-((o-tolylsulfonyl)carbamoyl)phenyl)methylene)bis(1-methyl-1H-indole-5,3-diyl))dicarbamate
Dicyclopentyl (3,3'-((2-methoxy-4-((o-tolylsulfonyl)carbamoyl)phenyl)methylene)bis(1-methyl-1H-indole-5,3-diyl))dicarbamate
Catalogue No.:PA 26 01540
CAS :
1160235-24-4
Molecular Formula : C46H49N5O8S
Molecular Weight : 831.97
Cyclopentyl (2,3-bis(2-Methoxy-4-((o-tolylsulfonyl)carbamoyl)benzyl)-1-methyl-1H-indol-5-yl)carbamate
Cyclopentyl (2,3-bis(2-Methoxy-4-((o-tolylsulfonyl)carbamoyl)benzyl)-1-methyl-1H-indol-5-yl)carbamate
Catalogue No.:PA 26 01550
CAS :
1160235-26-6
Molecular Formula : C47H48N4O10S2
Molecular Weight : 893.03
4-[[5-[[(Cyclopentyloxy)carbonyl]amino]-1-methyl-1H-indol-3-yl]methyl]-3-methoxy-benzoic acid methyl ester
4-[[5-[[(Cyclopentyloxy)carbonyl]amino]-1-methyl-1H-indol-3-yl]methyl]-3-methoxy-benzoic acid methyl ester
Catalogue No.:PA 26 0011001
CAS :
107754-19-8
Molecular Formula : C25H28N2O5
Molecular Weight : 436.51
4-[[5-[[(Cyclopentyloxy)carbonyl]amino]-1-methyl-1H-indol-3-yl]methyl]-3-methoxybenzoic acid
4-[[5-[[(Cyclopentyloxy)carbonyl]amino]-1-methyl-1H-indol-3-yl]methyl]-3-methoxybenzoic acid
Catalogue No.:PA 26 0011002
CAS :
107754-20-1
Molecular Formula : C24H26N2O5
Molecular Weight : 422.48
