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Montelukast Impurity

Veeprho Laboratories is a manufacturer and supplier of Montelukast impurities like Montelukast Amide Impurity, Montelukast Methylketone Impurity, Montelukast Methylstyrene Impurity / Montelukast EP Impurity B USP Related Compound F, Montelukast Nitrile Impurity, Montelukast S-Isomer Impurity / Montelukast Impurity A (S-Enantiomer), Montelukast Sulfoxide Impurity, Montelukast other-Isomer Impurity, Montelukast Dihydro Impurity, Montelukast Chloro alcohol Impurity, Montelukast CIS-Isomer / Montelukast Impurity G, Montelukast QUID-8-Impurity, Montelukast Keto Hydroxy Impurity / Montelukast (3S)-Hydroxy Methylketone, Montelukast Ketone Impurity, Montelukast Acid Impurity, Montelukast Michael Adduct, Montelukast Process Impurity, Montelukast Degradation Impurity, Montelukast Related Compound and Montelukast Potential Impurity. These impurities are provided with certificate of analysis along with the characterization data like NMR MASS IR and HPLC Purity. We also provide additional data like C NMR, CHN, TGA RF on request.


We are also manufacturer and supplier of all Montelukast USP, EP, BP pharmacopoeia impurities, any unknown impurity, APIs and intermediates with structure elucidation with help of C NMR, H NMR, MASS, CHN, HPLC data. On request we also manufacture and supply all impurity of Montelukast as per pharmacopoeia RRT.


We also manufacture and supply all Montelukast impurities which are to be isolated by preparative HPLC and Lyophilized.


All the Montelukast impurities like Montelukast Amide Impurity, Montelukast Methylketone Impurity, Montelukast Methylstyrene Impurity / Montelukast EP Impurity B USP Related Compound F, Montelukast Nitrile Impurity, Montelukast S-Isomer Impurity / Montelukast Impurity A (S-Enantiomer), Montelukast Sulfoxide Impurity, Montelukast other-Isomer Impurity, Montelukast Dihydro Impurity, Montelukast Chloro alcohol Impurity, Montelukast CIS-Isomer / Montelukast Impurity G, Montelukast QUID-8-Impurity, Montelukast Keto Hydroxy Impurity / Montelukast (3S)-Hydroxy Methylketone, Montelukast Ketone Impurity, Montelukast Acid Impurity, Montelukast Michael Adduct etc. are manufactured and supplied by Veeprho Laboratories are acceptable to all regulatory agencies in the world like US-FDA, MHRA, MCC, WHO, Brazil and Japan.


These Montelukast impurities are also used for ANDA filling/DMF filling and genotoxic study.

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Montelukast Impurities :-

Untitled Document

Montelukast Amide Impurity
Montelukast Amide Impurity

(R,E)-2-(1-(((1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2- yl)phenyl)propyl)thio)methyl)cyclopropyl)acetamide

Catalogue No : VL510001


Montelukast Methylketone Impurity
Montelukast Methylketone Impurity

(R,E)-2-(1-(((3-(2-acetylphenyl)-1-(3-(2-(7-chloroquinolin-2- yl)vinyl)phenyl)propyl)thio)methyl)cyclopropyl)acetic acid

Catalogue No : VL510002


Montelukast Methylstyrene Impurity / Montelukast EP Impurity B USP Related Compound F
Montelukast Methylstyrene Impurity / Montelukast EP Impurity B USP Related Compound F

(R,E)-2-(1-(((1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(prop-1-en-2- yl)phenyl)propyl)thio)methyl)cyclopropyl)acetic acid

Catalogue No : VL510003


Montelukast Nitrile Impurity
Montelukast Nitrile Impurity

(R,E)-2-(1-(((1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2- yl)phenyl)propyl)thio)methyl)cyclopropyl)acetonitrile

Catalogue No : VL510004


Montelukast S-Isomer Impurity / Montelukast Impurity A (S-Enantiomer)
Montelukast S-Isomer Impurity / Montelukast Impurity A (S-Enantiomer)

(S,E)-2-(1-(((1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2- yl)phenyl)propyl)thio)methyl)cyclopropyl)acetic acid

Catalogue No : VL510005


Montelukast Sulphoxide Impurity
Montelukast Sulphoxide Impurity

2-(1-(((R)-((R)-1-(3-((E)-2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2- hydroxypropan-2-yl)phenyl)propyl)sulfinyl)methyl)cyclopropyl)acetic acid

Catalogue No : VL510006


Montelukast other-Isomer Impurity
Montelukast other-Isomer Impurity

(S,E)-2-(1-(((1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2- hydroxypropan-2-yl)phenyl)propyl)thio)methyl)cyclopropyl)acetic acid

Catalogue No : VL510007


Montelukast Dihydro Impurity
Montelukast Dihydro Impurity

1-[[[(1R)-1-[3-[2-(7-Chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1- methylethyl)phenyl]propyl]thio] methyl]cyclopropaneacetic acid sodium salt

Catalogue No : VL510008


Montelukast Chloro alcohol Impurity
Montelukast Chloro alcohol Impurity

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

Catalogue No : VL510014


Montelukast CIS-Isomer / Montelukast Impurity G
Montelukast CIS-Isomer / Montelukast Impurity G

1-[[[(1R)-1-[3-[(1Z)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3- [2-(1-hydroxy-1- methylethyl)phenyl]propyl]thio]methyl] cyclopropaneacetic Acid

Catalogue No : VL510015


Montelukast QUID-8-Impurity
Montelukast QUID-8-Impurity

2-[2[3(S)-[3-[2-[7-chloro-2-quinolinyl]ethenyl] phenyl]-3-hydroxypropyl]phenyl]-2- propanol

Catalogue No : VL510009


Montelukast Keto Hydroxy Impurity / Montelukast (3S)-Hydroxy Methylketone
Montelukast Keto Hydroxy Impurity / Montelukast (3S)-Hydroxy Methylketone

1-(2-((S)-3(3-((E)-2-(7-chloroquinolin -2-yl)vinyl)phenyl)-3- hydroxypropyl)phenyl)ethanone

Catalogue No : VL510010


Montelukast Ketone Impurity
Montelukast Ketone Impurity

(E)-1-{3-[2-(7-Chloroquinolin-2-yl)vinyl]phenyl}-3-[2-(2-hydroxypropan-2- yl)phenyl]propan-1-one

Catalogue No : VL510011


Montelukast Acid Impurity
Montelukast Acid Impurity

2((3R)-3-({[1-(carboxylatomethyl)cyclopropyl] methyl}thio)-3-{3-[(E)-2-(7-Chloroquinolin-2-yl)vinyl]phenyl}propyl)benzoated disodium salt

Catalogue No : VL510012


Montelukast Michael Adduct
Montelukast Michael Adduct

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

Catalogue No : VL510017