Montelukast-impurities | Pharmaffiliates

montelukast

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.

PA 13 53020

Montelukast - Impurity B


  • Catalogue No.:PA 13 53020

  • CAS :

    918972-54-0

  • Molecular Formula : C35H34ClNO2S

  • Molecular Weight : 568.17

PA 13 53030

Montelukast - Impurity C


  • Catalogue No.:PA 13 53030

  • CAS :

    909849-96-3

  • Molecular Formula : C35H36ClNO4S

  • Molecular Weight : 602.18

PA 13 53040

Montelukast - Impurity D


  • Catalogue No.:PA 13 53040

  • CAS :

    1187586-61-3

  • Molecular Formula : C41H46ClNO5S2

  • Molecular Weight : 732.39

PA 13 53050

Montelukast - Impurity E


  • Catalogue No.:PA 13 53050

  • CAS :

    1187586-58-8

  • Molecular Formula : C41H46ClNO5S2

  • Molecular Weight : 732.39

PA 13 53060

Montelukast - Impurity F


  • Catalogue No.:PA 13 53060

  • CAS :

    937275-23-5

  • Molecular Formula : C34H32ClNO3S

  • Molecular Weight : 570.14

PA 13 53070

Montelukast - Impurity G


  • Catalogue No.:PA 13 53070

  • CAS :

    774538-96-4

  • Molecular Formula : C35H36ClNO3S

  • Molecular Weight : 586.18

PA 13 53080

Montelukast - Impurity H


  • Catalogue No.:PA 13 53080

  • CAS :

    851755-56-1

  • Molecular Formula : C34H32ClNO4S

  • Molecular Weight : 586.14

PA 13 53560

Montelukast Sulfone


  • Catalogue No.:PA 13 53560

  • CAS :

    1266620-74-9

  • Molecular Formula : C35H36ClNO5S

  • Molecular Weight : 618.18

PA 13 53570

Montelukast 1,2-Diol


  • Catalogue No.:PA 13 53570

  • CAS :

    186352-97-6

  • Molecular Formula : C35H36ClNO4S

  • Molecular Weight : 602.18

PA 13 53590

Montelukast Ether Impurity


  • Catalogue No.:PA 13 53590

  • CAS :

    168214-67-3

  • Molecular Formula : C29H26ClNO

  • Molecular Weight : 439.98

PA 13 53610

Montelukast Dihydro Impurity


  • Catalogue No.:PA 13 53610

  • CAS :

    142147-98-6

  • Molecular Formula : C35H37ClNNaO3S

  • Molecular Weight : 610.18

PA 13 53660

Montelukast 3-Oxo Propanol


  • Catalogue No.:PA 13 53660

  • CAS :

    1258428-71-5

  • Molecular Formula : C29H26ClNO2

  • Molecular Weight : 455.98

PA 13 53740

Dihydro Montelukast


  • Catalogue No.:PA 13 53740

  • CAS :

    142147-67-9

  • Molecular Formula : C35H38ClNO3S

  • Molecular Weight : 588.2

PA STI 027340

Des[3-[[(1-Carboxymethyl)cyclopropyl]methyl]thio]-2-propenyl Montelukast-d6 Mesylate


  • Catalogue No.:PA STI 027340

  • CAS :

    NA

  • Molecular Formula : C30H24D6ClNO4S

  • Molecular Weight : 542.12

PA STI 050340

21(R)-Hydroxy Montelukast-d6


  • Catalogue No.:PA STI 050340

  • CAS :

    NA

  • Molecular Formula : C35H30D6ClNO4S

  • Molecular Weight : 608.22

PA STI 050350

21(S)-Hydroxy Montelukast-d6


  • Catalogue No.:PA STI 050350

  • CAS :

    NA

  • Molecular Formula : C35H30D6ClNO4S

  • Molecular Weight : 608.22

PA STI 059630

Methoxy-d3 Montelukast


  • Catalogue No.:PA STI 059630

  • CAS :

    NA

  • Molecular Formula : C36H35D3ClNO3S

  • Molecular Weight : 603.23

PA STI 066190

Montelukast-d6 Bis-sulfide (mixture of diastereomers)


  • Catalogue No.:PA STI 066190

  • CAS :

    NA

  • Molecular Formula : C41H40D6ClNO5S2

  • Molecular Weight : 738.43

PA STI 066220

Montelukast Acyl-β-D-glucuronide-d6


  • Catalogue No.:PA STI 066220

  • CAS :

    NA

  • Molecular Formula : C41H38D6ClNO9S

  • Molecular Weight : 768.34

PA STI 066240

Montelukast Methyl Ester-d3


  • Catalogue No.:PA STI 066240

  • CAS :

    NA

  • Molecular Formula : C36H35D3ClNO3S

  • Molecular Weight : 603.23

PA 13 53800

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

  • CAS :

    807638-71-7

  • Molecular Formula : C30H30ClNO4S

  • Molecular Weight : 536.08

PA 13 53810

(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

  • CAS :

    NA

  • Molecular Formula : C35H36ClNO5S

  • Molecular Weight : 618.19

PA 13 53820

2-(2-((E)-3-(3-((E)-2-(7-Chloroquinolin-2-yl)vinyl)phenyl)allyl)phenyl)propan-2-ol


  • Catalogue No.:PA 13 53820

  • CAS :

    1187586-63-5

  • Molecular Formula : C29H26ClNO

  • Molecular Weight : 439.98

PA 13 53830

(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

  • CAS :

    NA

  • Molecular Formula : C34H34ClNO4S

  • Molecular Weight : 588.16

PA 13 0531001

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

  • CAS :

    NA

  • Molecular Formula : C45H55ClNNaO5S2

  • Molecular Weight : 812.5

PA 13 0531002

Montelukast Methyl Ester


  • Catalogue No.:PA 13 0531002

  • CAS :

    855473-51-7

  • Molecular Formula : C36H38ClNO3S

  • Molecular Weight : 600.21

PAI 13 004022

Methyl (E)-2-(3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-((methylsulfonyl)oxy)propyl)benzoate


  • Catalogue No.:PAI 13 004022

  • CAS :

    NA

  • Molecular Formula : C29H26ClNO5S

  • Molecular Weight : 536.04

PAI 13 004023

(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

  • CAS :

    NA

  • Molecular Formula : C34H32ClNO4S

  • Molecular Weight : 586.14

PA 13 0531005

21(R)-Hydroxy Montelukast


  • Catalogue No.:PA 13 0531005

  • CAS :

    184763-26-6

  • Molecular Formula : C35H36ClNO4S

  • Molecular Weight : 602.19

PA 13 0531006

21(S)-Hydroxy Montelukast


  • Catalogue No.:PA 13 0531006

  • CAS :

    184763-29-9

  • Molecular Formula : C35H36ClNO4S

  • Molecular Weight : 602.19

PA 13 0531003

Montelukast EP Impurity D+E (Michael Adduct 1+2)


  • Catalogue No.:PA 13 0531003

  • CAS :

    2125943-58-8

  • Molecular Formula : C41H46ClNO5S2

  • Molecular Weight : 732.39

PA 13 0531004

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

  • CAS :

    184764-20-3

  • Molecular Formula : C31H32ClNO4

  • Molecular Weight : 518.05

PA 13 0531007

2-[3-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-oxopropyl]benzoic Acid Methyl Ester


  • Catalogue No.:PA 13 0531007

  • CAS :

    149968-11-6

  • Molecular Formula : C28H22ClNO3

  • Molecular Weight : 455.94

PA 13 0531008

Montelukast Acyl-b-D-glucuronide


  • Catalogue No.:PA 13 0531008

  • CAS :

    188717-17-1

  • Molecular Formula : C41H44ClNO9S

  • Molecular Weight : 762.31

PA 13 0531009

Montelukast Dicarboxylic Acid (Mixture of Diastereomers)


  • Catalogue No.:PA 13 0531009

  • CAS :

    213380-27-9

  • Molecular Formula : C35H34ClNO5S

  • Molecular Weight : 616.17

PA 13 0531010

1,1'-[Dithiobis(methylene)]biscyclopropaneacetic Acid Methyl Ester


  • Catalogue No.:PA 13 0531010

  • CAS :

    1446481-28-2

  • Molecular Formula : C13H20O4S2

  • Molecular Weight : 304.42

PA 13 0531011

2-[2-[(3S)-3-[3-[(1E)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-chloropropyl]phenyl]-2-propanol


  • Catalogue No.:PA 13 0531011

  • CAS :

    880769-28-8

  • Molecular Formula : C29H27Cl2NO

  • Molecular Weight : 476.44

PA 13 0531012

Mixture of Montelukast Michael Adduct R,R-Isomer and Michael Adduct R,S-Isomer


  • Catalogue No.:PA 13 0531012

  • CAS :

    2125943-58-8

  • Molecular Formula : C41H46ClNO5S2

  • Molecular Weight : 732.39

PAI 13 004024

(S,E)-3-(2-Acetylphenyl)-1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)propyl diphenyl Phosphate


  • Catalogue No.:PAI 13 004024

  • CAS :

    NA

  • Molecular Formula : C40H33ClNO5P

  • Molecular Weight : 674.13

PA 13 0531013

Methyl (S,E)-2-(3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-hydroxypropyl)benzoate


  • Catalogue No.:PA 13 0531013

  • CAS :

    181139-72-0

  • Molecular Formula : C28H24ClNO3

  • Molecular Weight : 457.95

PA 13 0531014

(E)-3-[2-(7-Chloro-2-quinolinyl)ethenyl]benzaldehyde


  • Catalogue No.:PA 13 0531014

  • CAS :

    120578-03-2

  • Molecular Formula : C18H12ClNO

  • Molecular Weight : 293.75

PA 13 0531015

(E)-1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-2-propen-1-ol


  • Catalogue No.:PA 13 0531015

  • CAS :

    149968-10-5

  • Molecular Formula : C20H16ClNO

  • Molecular Weight : 321.8

PA 13 0531016

Methyl 2-Iodobenzoate


  • Catalogue No.:PA 13 0531016

  • CAS :

    610-97-9

  • Molecular Formula : C8H7IO2

  • Molecular Weight : 262.05

PA 13 0531018

Montelukast for Peak Identification


  • Catalogue No.:PA 13 0531018

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

PA 13 0531019

Montelukast Racemate


  • Catalogue No.:PA 13 0531019

  • CAS :

    NA

  • Molecular Formula : C47H59ClN2O3S

  • Molecular Weight : 767.51

PAI 13 004025

Methyl (S,E)-2-(3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-((methylsulfonyl)oxy)propyl)benzoate


  • Catalogue No.:PAI 13 004025

  • CAS :

    NA

  • Molecular Formula : C29H26ClNO5S

  • Molecular Weight : 536.04

PA 13 0531020

(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

  • CAS :

    1079753-36-8

  • Molecular Formula : C29H28ClNO2

  • Molecular Weight : 458

PA 13 0531021

(+)-DIP-Chloride


  • Catalogue No.:PA 13 0531021

  • CAS :

    112246-73-8

  • Molecular Formula : C20H34BCl

  • Molecular Weight : 320.75

PA 13 0531022

(1-(Cyanomethyl)cyclopropyl)methyl methanesulfonate


  • Catalogue No.:PA 13 0531022

  • CAS :

    152922-86-6

  • Molecular Formula : C7H11NO3S

  • Molecular Weight : 189.23

PA 13 0531023

Montelukast Sulfoxide (Mixture of Diastereomers)


  • Catalogue No.:PA 13 0531023

  • CAS :

    909849-96-3

  • Molecular Formula : C35H36ClNO4S

  • Molecular Weight : 602.19

PA 13 0531024

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

  • CAS :

    NA

  • Molecular Formula : C45H56ClNO5S2

  • Molecular Weight : 790.52