A leukotriene receptor antagonist, Montelukast is used for treating asthma and other allergic symptoms. It works by blocking a substance called leukotriene, which helps to decrease certain asthma and allergy symptoms. Reference standards of Montelukast API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
Montelukast
Catalogue No.:PA 13 53000
CAS :
Molecular Formula : C35H36ClNO3S
Molecular Weight : 586.18
Montelukast S-Isomer Sodium Salt
Catalogue No.:PA 13 53010
Molecular Formula : C35H35ClNNaO3S
Molecular Weight : 608.17
Montelukast Methylstyrene
Catalogue No.:PA 13 53020
Molecular Formula : C35H34ClNO2S
Molecular Weight : 568.17
Montelukast Sulfoxide
Catalogue No.:PA 13 53030
Molecular Formula : C35H36ClNO4S
Molecular Weight : 602.18
Montelukast Michael Adduct R,R-Isomer
Catalogue No.:PA 13 53040
Molecular Formula : C41H46ClNO5S2
Molecular Weight : 732.39
Michael Adduct R,S-Isomer
Catalogue No.:PA 13 53050
Montelukast Methyl Ketone
Catalogue No.:PA 13 53060
Molecular Formula : C34H32ClNO3S
Molecular Weight : 570.14
Montelukast cis Isomer
Catalogue No.:PA 13 53070
[1-[[[(1R)-1-[3-[(E)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(methoxycarbonyl)phenyl]propyl]sulfanyl] methyl]cyclopropyl]acetic Acid
Catalogue No.:PA 13 53080
Molecular Formula : C34H32ClNO4S
Molecular Weight : 586.14
Montelukast Sodium
Catalogue No.:PA 13 53510
(S)-1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propan-1-ol
Catalogue No.:PA 13 53520
Molecular Formula : C29H28ClNO2
Molecular Weight : 457.99
1-(Mercaptomethyl)cyclopropaneacetic Acid
Catalogue No.:PA 13 53530
Molecular Formula : C6H10O2S
Molecular Weight : 146.21
Montelukast (3S)-Hydroxy Benzoate
Catalogue No.:PA 13 53540
Molecular Formula : C28H24ClNO3
Molecular Weight : 457.95
Methyl 2-(3-{3-[2-(7-chloroquinolin-2-yl)vinyl]phenyl}-3-oxopropyl)benzoate
Catalogue No.:PA 13 53550
Molecular Formula : C28H22ClNO3
Molecular Weight : 455.93
Montelukast Sulfone
Catalogue No.:PA 13 53560
Molecular Formula : C35H36ClNO5S
Molecular Weight : 618.18
Montelukast 1,2-Diol
Catalogue No.:PA 13 53570
Montelukast Disulfide Impurity
Catalogue No.:PA 13 53580
Molecular Formula : C12H18O4S2
Molecular Weight : 290.4
Montelukast Ether Impurity
Catalogue No.:PA 13 53590
Molecular Formula : C29H26ClNO
Molecular Weight : 439.98
Montelukast Dicyclohexylamine
Catalogue No.:PA 13 53600
Molecular Formula : C47H59ClN2O3S
Molecular Weight : 767.5
Montelukast Dihydro Impurity
Catalogue No.:PA 13 53610
Molecular Formula : C35H37ClNNaO3S
Molecular Weight : 610.18
Montelukast Lactone
Catalogue No.:PA 13 53620
Molecular Formula : C27H20ClNO2
Molecular Weight : 425.91
Montelukast Amide
Catalogue No.:PA 13 53630
Molecular Formula : C35H37ClN2O2S
Molecular Weight : 585.2
Montelukast Cyclopropaneacetonitrile
Catalogue No.:PA 13 53640
Molecular Formula : C35H35ClN2OS
Molecular Weight : 567.18
Montelukast (3S)-Hydroxy Propanol
Catalogue No.:PA 13 53650
Montelukast 3-Oxo Propanol
Catalogue No.:PA 13 53660
Molecular Formula : C29H26ClNO2
Molecular Weight : 455.98
7-Chloroquinaldine
Catalogue No.:PA 13 53670
Molecular Formula : C10H8ClN
Molecular Weight : 177.63
Montelukast (3R)-Hydroxy Propanol
Catalogue No.:PA 13 53680
α-Hydroxy Montelukast
Catalogue No.:PA 13 53090
Mixture of (Montelukast Sodium, And Montelukast Methyl Impurity)
Catalogue No.:PA 13 53690
Molecular Formula : C71H76Cl2N2O6S2
Molecular Weight : 1188.41
Montelukast (3R)-Hydroxy Benzoate
Catalogue No.:PA 13 53700
Molecular Formula : C28H24ClNO2
Montelukast KSM-II Lactone Impurity
Catalogue No.:PA 13 53710
Molecular Formula : C6H8OS
Molecular Weight : 128.19
1-(Chloromethyl)-3-(dichloromethyl)benzene
Catalogue No.:PA 13 53720
Molecular Formula : C8H7Cl3
Molecular Weight : 209.5
1,3-Bis(dichloromethyl)benzene
Catalogue No.:PA 13 53730
Molecular Formula : C8H6Cl4
Molecular Weight : 243.95
Dihydro Montelukast
Catalogue No.:PA 13 53740
Molecular Formula : C35H38ClNO3S
Molecular Weight : 588.2
Montelukast S-isomer
Catalogue No.:PA 13 53750
Des[3-[[(1-Carboxymethyl)cyclopropyl]methyl]thio]-2-propenyl Montelukast-d6 Mesylate
Catalogue No.:PA STI 027340
Molecular Formula : C30H24D6ClNO4S
Molecular Weight : 542.12
2,2-Dimethoxy-d6 Montelukast
Catalogue No.:PA STI 033730
Molecular Formula : C37H34D6ClNO3S
Molecular Weight : 620.27
21(R)-Hydroxy Montelukast-d6
Catalogue No.:PA STI 050340
Molecular Formula : C35H30D6ClNO4S
Molecular Weight : 608.22
21(S)-Hydroxy Montelukast-d6
Catalogue No.:PA STI 050350
Methoxy-d3 Montelukast
Catalogue No.:PA STI 059630
Molecular Formula : C36H35D3ClNO3S
Molecular Weight : 603.23
Montelukast-d6 Bis-sulfide (mixture of diastereomers)
Catalogue No.:PA STI 066190
Molecular Formula : C41H40D6ClNO5S2
Molecular Weight : 738.43
Montelukast-d6 Sodium Salt
Catalogue No.:PA STI 066200
Molecular Formula : C35H29D6ClNNaO3S
Molecular Weight : 614.20
Montelukast-d6
Catalogue No.:PA STI 066210
Molecular Formula : C35H30D6ClNO3S
Molecular Weight : 592.22
Montelukast Acyl-β-D-glucuronide-d6
Catalogue No.:PA STI 066220
Molecular Formula : C41H38D6ClNO9S
Molecular Weight : 768.34
Montelukast Cyclopropaneacetonitrile-d6
Catalogue No.:PA STI 066230
Molecular Formula : C35H29D6ClN2OS
Molecular Weight : 573.22
Montelukast Methyl Ester-d3
Catalogue No.:PA STI 066240
2-[(3S)-(2-(7-Chloro-2-quinolinyl)- ethenyl-phenyl)-3-hydroxy-propyl)] phenyl)-2-propanol
Catalogue No.:PAI 13 004010
Peroxybis(trimethylsilane)
Catalogue No.:PAI 13 004020
Molecular Formula : C6H18O2Si2
Molecular Weight : 178.38
Montelukast (3S)-Hydroxy Methylketone
Catalogue No.:PA 13 53760
Molecular Weight : 441.96
(E)-2-(2-(3-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-((2-methylenebutyl)thio)propyl)phenyl)propan-2-ol
Catalogue No.:PA 13 53770
Molecular Formula : C34H36ClNOS
Molecular Weight : 542.18
2-[(3S)-3-(Acetyloxy)-1-bromo-3-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]propyl]-benzoic Acid Methyl Ester
Catalogue No.:PA 13 53780
Molecular Formula : C30H25BrClNO4
Molecular Weight : 578.88
Catalogue No.:PA IPIMP 25 14
Molecular Formula :
Molecular Weight : NA
Catalogue No.:PA IPIPRS 132 14
Montelukast racemate (Y0001433)
Catalogue No.:PA EPY0001433
Molecular Formula : NA
Montelukast sodium (Y0001434)
Catalogue No.:PA EPY0001434
Montelukast for peak identification (Y0001435)
Catalogue No.:PA EPY0001435
Montelukast dicyclohexylamine (Y0001436)
Catalogue No.:PA EPY0001436
montelukast dicyclohexylamine (1147RB)
Catalogue No.:PA BP1147RB
Montelukast Dicyclohexylamine (1446815)
Catalogue No.:PA USP1446815
Montelukast for Peak Identification (1446837)
Catalogue No.:PA USP1446837
Montelukast Racemate (1446848)
Catalogue No.:PA USP1446848
Montelukast Sodium (1446859)
Catalogue No.:PA USP1446859
(R,E)-1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl methanesulfonate
Catalogue No.:PA 13 53790
Molecular Formula : C30H30ClNO4S
Molecular Weight : 536.08
2-[2-[(3S)-3-[3-[(E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[(methanesulfonyl)oxy]propyl]phenyl]-2-propanol
Catalogue No.:PA 13 53800
(R,E)-2-(1-(((1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)sulfonyl)methyl)cyclopropyl)acetic Acid
Catalogue No.:PA 13 53810
Molecular Weight : 618.19
2-(2-((E)-3-(3-((E)-2-(7-Chloroquinolin-2-yl)vinyl)phenyl)allyl)phenyl)propan-2-ol
Catalogue No.:PA 13 53820
(E)-2-(1-(((1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(1-hydroxyethyl)phenyl)propyl)sulfinyl)methyl)cyclopropyl)acetic Acid
Catalogue No.:PA 13 53830
Molecular Formula : C34H34ClNO4S
Molecular Weight : 588.16
Montelukast Gem-dimethylmethylene Analogue
Catalogue No.:PA 13 53840
1-((((S)-2-(3-((R)-1-(((1-(Carboxymethyl)cyclopropyl)methyl)thio)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)phenyl)-1-(7-chloroquinolin-2-yl)ethyl)thio)methyl)cyclopropane-1-carboxylic Acid
Catalogue No.:PA 13 0531000
Molecular Formula : C40H44ClNO5S2
Molecular Weight : 718.36
(S,E)-3-(2-Acetylphenyl)-1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)propyl methanesulfonate
Catalogue No.:PAI 13 004021
Molecular Formula : C29H26ClNO4S
Molecular Weight : 520.04
Sodium 2-(1-((((1R)-1-(3-((1R)-2-(7-chloroquinolin-2-yl)-1-((2-((2-ethylhexyl)oxy)-2-oxoethyl)thio)ethyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)thio)methyl)cyclopropyl)acetate
Catalogue No.:PA 13 0531001
Molecular Formula : C45H55ClNNaO5S2
Molecular Weight : 812.5
Montelukast Methyl Ester
Catalogue No.:PA 13 0531002
Molecular Formula : C36H38ClNO3S
Molecular Weight : 600.21
Methyl (E)-2-(3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-((methylsulfonyl)oxy)propyl)benzoate
Catalogue No.:PAI 13 004022
Molecular Formula : C29H26ClNO5S
Molecular Weight : 536.04
(E)-2-(1-(((1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(methoxycarbonyl)phenyl)propyl)thio)methyl)cyclopropyl)acetic Acid
Catalogue No.:PAI 13 004023
21(R)-Hydroxy Montelukast
Catalogue No.:PA 13 0531005
Molecular Weight : 602.19
21(S)-Hydroxy Montelukast
Catalogue No.:PA 13 0531006
Montelukast EP Impurity D+E (Michael Adduct 1+2)
Catalogue No.:PA 13 0531003
2-[3-(S)-[3-(2-(7-Chloro-2-quinolinyl)ethenyl)phenyl]-3-hydroxypropyl]phenyl-2-(1’-hydroxy-2’-methoxymethyl)propanol (Mixture of Diastereomers)
Catalogue No.:PA 13 0531004
Molecular Formula : C31H32ClNO4
Molecular Weight : 518.05
2-[3-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-oxopropyl]benzoic Acid Methyl Ester
Catalogue No.:PA 13 0531007
Molecular Weight : 455.94
Montelukast Acyl-b-D-glucuronide
Catalogue No.:PA 13 0531008
Molecular Formula : C41H44ClNO9S
Molecular Weight : 762.31
Montelukast Dicarboxylic Acid (Mixture of Diastereomers)
Catalogue No.:PA 13 0531009
Molecular Formula : C35H34ClNO5S
Molecular Weight : 616.17
1,1'-[Dithiobis(methylene)]biscyclopropaneacetic Acid Methyl Ester
Catalogue No.:PA 13 0531010
Molecular Formula : C13H20O4S2
Molecular Weight : 304.42
2-[2-[(3S)-3-[3-[(1E)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-chloropropyl]phenyl]-2-propanol
Catalogue No.:PA 13 0531011
Molecular Formula : C29H27Cl2NO
Molecular Weight : 476.44
(S,E)-3-(2-Acetylphenyl)-1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)propyl diphenyl Phosphate
Catalogue No.:PAI 13 004024
Molecular Formula : C40H33ClNO5P
Molecular Weight : 674.13
Methyl (S,E)-2-(3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-hydroxypropyl)benzoate
Catalogue No.:PA 13 0531013
(E)-3-[2-(7-Chloro-2-quinolinyl)ethenyl]benzaldehyde
Catalogue No.:PA 13 0531014
Molecular Formula : C18H12ClNO
Molecular Weight : 293.75
(E)-1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-2-propen-1-ol
Catalogue No.:PA 13 0531015
Molecular Formula : C20H16ClNO
Molecular Weight : 321.8
Methyl 2-Iodobenzoate
Catalogue No.:PA 13 0531016
Molecular Formula : C8H7IO2
Molecular Weight : 262.05
Montelukast for Peak Identification
Catalogue No.:PA 13 0531018
Montelukast Racemate
Catalogue No.:PA 13 0531019
Molecular Weight : 767.51
Methyl (S,E)-2-(3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-((methylsulfonyl)oxy)propyl)benzoate
Catalogue No.:PAI 13 004025
(E)-1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propan-1-ol
Catalogue No.:PA 13 0531020
Molecular Weight : 458
(+)-DIP-Chloride
Catalogue No.:PA 13 0531021
Molecular Formula : C20H34BCl
Molecular Weight : 320.75
(1-(Cyanomethyl)cyclopropyl)methyl methanesulfonate
Catalogue No.:PA 13 0531022
Molecular Formula : C7H11NO3S
Molecular Weight : 189.23
[1-[[[1-[3-[(E)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfinyl]methyl]cyclopropyl]acetic Acid Sodium
Catalogue No.:PA 13 0531023
Molecular Formula : C35H35ClNNaO4S
Molecular Weight : 624.17
2-(1-((((1R)-1-(3-((1S)-2-(7-Chloroquinolin-2-yl)-1-((2-((2-ethylhexyl)oxy)-2-oxoethyl)thio)ethyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)thio)methyl)cyclopropyl)acetic Acid
Catalogue No.:PA 13 0531024
Molecular Formula : C45H56ClNO5S2
Molecular Weight : 790.52
Montelukast R-Sulfoxide
Catalogue No.:PA 13 0531025
Sodium 2-(1-((((R)-1-(3-((E)-2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)sulfinyl)methyl)cyclopropyl)acetate
Catalogue No.:PA 13 0531026
Sodium 2-(1-((((R)-1-(3-((Z)-2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)sulfinyl)methyl)cyclopropyl)acetate
Catalogue No.:PA 13 0531027
Montelukast Ketocarbinol
Catalogue No.:PA 13 0531017
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