Category
Montelukast
CAS Number
STD - 158966-92-8: IMP-B- 918972-54-0: IMP-C- 909849-96-3 : IMP-D- 1187586-61-3: IMP-E- 1187586-58-8: IMP-F- 937275-23-5
Molecular Formula
STD- C35H36ClNO3S: IMP-B- C35H34ClNO2S: IMP-C- C35H36ClNO4S: IMP-D- C41H46ClNO5S2: IMP-E- C41H46ClNO5S2: IMP-F- C34H32ClNO3S
Molecular Weight
STD- 586.18: IMP-B 568.2: IMP-C- 602.2 : IMP-D- 732.4: IMP-E- 732.4 : IMP-F- 570.1
Synonym

Montelukast ((R,E)-2-(1-((1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propylthio)methyl)cyclopropyl)acetic acid)

Montelukast EP Impurity B ([1-[[[(1R)-1-[3-[(E)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(1-methylethenyl)phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid)

Montelukast EP Impurity C ([1-[[[1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfinyl]methyl]cyclopropyl]acetic acid)

Montelukast EP Impurity D (1-[[[(1R)-1-[3-[(1R)-1-[[[1-(carboxymethyl)cyclopropyl]methyl]sulfanyl]-2-(7-chloroquinolin-2-yl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfanyl]methyl] cyclopropyl]acetic acid)

Montelukast EP Impurity E (1-[[[(1R)-1-[3-[(1S)-1-[[[1-(carboxymethyl)cyclopropyl]methyl]sulfanyl]-2-(7-chloroquinolin-2-yl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfanyl] methyl]cyclopropyl]acetic acid)

Montelukast EP Impurity F ([1-[[[(1R)-3-(2-acetylphenyl)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid)

Montelukast for Peak Identification CRS is a pharmacopeia-grade certified reference standard used to accurately identify the principal peak of Montelukast in chromatographic analysis. It is specifically designed for use in HPLC, UPLC, and LC-MS applications to ensure peak confirmation, retention time accuracy, and method validation.