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Pharmaceutical Reference Standards / Impurity Standards

Montelukast Sodium

Montelukast Sodium

CAT. No.M050000
CAS. No.151767-02-1
Mol. F.C35H35ClNaNO3S
Mol. W.608.17 g/mol
Stock Status:Instock

Montelukast Sodium Reference Standard

Montelukast Sodium Reference Standard

CAT. No.M050000A
CAS. No.151767-02-1
Mol. F.C35H35ClNaNO3S
Mol. W.608.17 g/mol
Stock Status:Instock

Montelukast Acid

Montelukast Acid

CAT. No.M050001
CAS. No.158966-92-8
Mol. F.C35H36ClNO3S
Mol. W.586.18 g/mol
Stock Status:Instock

Montelukast Mercapto Acid Impurity

Montelukast Mercapto Acid Impurity

CAT. No.M050002
CAS. No.162515-68-6
Mol. F.C6H10O2S
Mol. W.146.21 g/mol
Stock Status:Custom Synthesis

Montelukast (3S)-Hydroxy Propanol

Montelukast (3S)-Hydroxy Propanol

CAT. No.M050003
CAS. No.287930-77-2
Mol. F.C29H28ClNO2
Mol. W.457.99 g/mol
Stock Status:Instock

Montelukast 3-Oxo Benzoate

Montelukast 3-Oxo Benzoate

CAT. No.M050004
CAS. No.149968-11-6
Mol. F.C28H22ClNO3
Mol. W.455.93 g/mol
Stock Status:Custom Synthesis

Montelukast EP Impurity C

Montelukast EP Impurity C

CAT. No.M050005
CAS. No.909849-96-3
Mol. F.C35H36ClNO4S
Mol. W.602.18 g/mol
Stock Status:Instock

Montelukast (3R)-Hydroxy Benzoate

Montelukast (3R)-Hydroxy Benzoate

CAT. No.M050006
CAS. No.150026-72-5
Mol. F.C28H24ClNO3
Mol. W.457.95 g/mol
Stock Status:Custom Synthesis

Montelukast EP Impurity F

Montelukast EP Impurity F

CAT. No.M050007
CAS. No.937275-23-5
Mol. F.C34H32ClNO3S
Mol. W.570.14 g/mol
Stock Status:Instock

Montelukast EP Impurity B

Montelukast EP Impurity B

CAT. No.M050008
CAS. No.918972-54-0
Mol. F.C35H34ClNO2S
Mol. W.568.17 g/mol
Stock Status:Instock

Montelukast Disulfide Impurity

Montelukast Disulfide Impurity

CAT. No.M050009
CAS. No.NA
Mol. F.C12H18O4S2
Mol. W.290.40 g / mol
Stock Status:Under Synthesis

Montelukast EP Impurity G

Montelukast EP Impurity G

CAT. No.M050010
CAS. No.774538-96-4
Mol. F.C35H36ClNO3S
Mol. W.586.18 g/mol
Stock Status:Limited Stock

Montelukast Racemate

Montelukast Racemate

CAT. No.M050010A
CAS. No.NA
Mol. F.C35H35ClNNaO3S
Mol. W.608.17 g/mol
Stock Status:Custom Synthesis

Montelukast Dicyclohexylamine

Montelukast Dicyclohexylamine

CAT. No.M050011
CAS. No.577953-88-9
Mol. F.C47H59ClN2O3S
Mol. W.767.50 g/mol
Stock Status:Instock

Montelukast Dicyclohexylamine Salt

Montelukast Dicyclohexylamine Salt

CAT. No.M050011A
CAS. No.577953-88-9
Mol. F.C47H59ClN2O3S
Mol. W.767.5 g/mol
Stock Status:Instock

Montelukast Sulfone

Montelukast Sulfone

CAT. No.M050012
CAS. No.126620-74-9
Mol. F.C35H36ClNO5S
Mol. W.618.18 g / mol
Stock Status:Instock

Montelukast Lactone

Montelukast Lactone

CAT. No.M050013
CAS. No.1100617-38-6
Mol. F.C27H20ClNO2
Mol. W.425.91 g / mol
Stock Status:Custom Synthesis

Montelukast Ether Impurity

Montelukast Ether Impurity

CAT. No.M050014
CAS. No.168214-67-3
Mol. F.C29H26ClNO
Mol. W.439.98 g/mol
Stock Status:Instock

Montelukast Dihydro Impurity (Sodium Salt)

Montelukast Dihydro Impurity (Sodium Salt)

CAT. No.M050015
CAS. No.142147-98-6
Mol. F.C35H38ClNNaO3S
Mol. W.610.0 g/mol, 588.2 g/mol (as base)
Stock Status:Limited Stock

Montelukast Dihydro Impurity

Montelukast Dihydro Impurity

CAT. No.M050015A
CAS. No.142147-67-9
Mol. F.C35H38ClNO3S
Mol. W.588.20 g/mol
Stock Status:Instock

Montelukast EP Impurity H

Montelukast EP Impurity H

CAT. No.M050016
CAS. No.851755-56-1
Mol. F.C34H32ClNO4S
Mol. W.586.14 g/mol
Stock Status:Instock

Montelukast Impurity E & D

Montelukast Impurity E & D

CAT. No.M050017
CAS. No.1187586-61-3 ,1187586-58-8
Mol. F.C82H92Cl2N2O10S4
Mol. W.1464.78 g/mol
Stock Status:Instock

Montelukast Sodium EP Impurity A

Montelukast Sodium EP Impurity A

CAT. No.M050018
CAS. No.190078-45-6
Mol. F.C35H35ClNNaO3S
Mol. W.608.17 g/mol
Stock Status:Limited Stock

Montelukast S-Isomer

Montelukast S-Isomer

CAT. No.M050018A
CAS. No.220927-27-5
Mol. F.C35H36ClNO3S
Mol. W.586.18 g/mol
Stock Status:Limited Stock

Montelukast EP Impurity I

Montelukast EP Impurity I

CAT. No.M050020
CAS. No.2045402-27-3
Mol. F.C35H36ClNO4S
Mol. W.602.18 g/mol
Stock Status:Limited Stock

Montelukast Acid Impurity Disodium Salt

Montelukast Acid Impurity Disodium Salt

CAT. No.M050022
CAS. No.213380-27-9
Mol. F.C35H32ClNNa2O5S
Mol. W.660.13 g/mol
Stock Status:Limited Stock

Montelukast Chloro alcohol Impurity

Montelukast Chloro alcohol Impurity

CAT. No.M050023
CAS. No.880769-28-8
Mol. F.C29H27Cl2NO
Mol. W.476.44 g/mol
Stock Status:Instock

Montelukast Nitrile Impurity

Montelukast Nitrile Impurity

CAT. No.M050024
CAS. No.866923-62-8
Mol. F.C35H35ClN2OS
Mol. W.567.18 g/mol
Stock Status:Instock

Montelukast racemate (racemic mixture of Montelukast Dicyclohexylamine)

Montelukast racemate (racemic mixture of Montelukast Dicyclohexylamine)

CAT. No.M050025
CAS. No.NA
Mol. F.C47H59ClN2O3S
Mol. W.767.50 g/mol
Stock Status:Instock

2-Methoxyphenylacetic Acid

2-Methoxyphenylacetic Acid

CAT. No.M050026
CAS. No.93-25-4
Mol. F.C9H10O3
Mol. W.166.18 g/mol
Stock Status:Custom Synthesis

Montelukast 1,2-Diol (Mixture of Diastereomers)

Montelukast 1,2-Diol (Mixture of Diastereomers)

CAT. No.M050027
CAS. No.186352-97-6
Mol. F.C35H36ClNO4S
Mol. W.602.18 g/mol
Stock Status:Custom Synthesis

Montelukast (3S)-Hydroxy Methylketone

Montelukast (3S)-Hydroxy Methylketone

CAT. No.M050028
CAS. No.184764-13-4
Mol. F.C28H24ClNO2
Mol. W.441.14 g/mol
Stock Status:Custom Synthesis

Montelukast Ketone impurity

Montelukast Ketone impurity

CAT. No.M050029
CAS. No.1258428-71-5
Mol. F.C29H26ClNO2
Mol. W.455.99 g/mol
Stock Status:Instock

7-Chloro-2-methylquinoline

7-Chloro-2-methylquinoline

CAT. No.M050030
CAS. No.4965-33-7
Mol. F.C10H8ClN
Mol. W.177.63 g/mol
Stock Status:Custom Synthesis

(S,E)-1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propan-1-ol

(S,E)-1-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propan-1-ol

CAT. No.M050031
CAS. No.142569-70-8
Mol. F.C29H28ClNO2
Mol. W.458.0 g/mol
Stock Status:Instock

Montelukast Amide

Montelukast Amide

CAT. No.M050032
CAS. No.866923-63-9
Mol. F.C35H37ClN2O2S
Mol. W.585.20 g/mol
Stock Status:Custom Synthesis

Montelukast Methyl Ether

Montelukast Methyl Ether

CAT. No.M050033
CAS. No.1351973-25-5
Mol. F.C36H38ClNO3S
Mol. W.600.21 g/mol
Stock Status:Instock

Montelukast Dicarboxylic Acid impurity (Mixture of Diastereomers)

Montelukast Dicarboxylic Acid impurity (Mixture of Diastereomers)

CAT. No.M050034
CAS. No.213380-27-9
Mol. F.C35H34ClNO5S
Mol. W.616.17 g/mol
Stock Status:Custom Synthesis

Montelukast(3R)-Hydroxy Propanol

Montelukast(3R)-Hydroxy Propanol

CAT. No.M050035
CAS. No.150026-75-8
Mol. F.C29H28ClNO2
Mol. W.457.99 g/mol
Stock Status:Custom Synthesis

Montelukast EP Impurity E

Montelukast EP Impurity E

CAT. No.M050036
CAS. No.1187586-58-8
Mol. F.C41H46ClNO5S2
Mol. W.732.39 g/mol
Stock Status:Instock

Montelukast EP Impurity D

Montelukast EP Impurity D

CAT. No.M050037
CAS. No.1187586-61-3
Mol. F.C41H46ClNO5S2
Mol. W.732.39 g/mol
Stock Status:Instock

Montelukast Dicyclohexylamine

Montelukast Dicyclohexylamine

CAT. No.M050038
CAS. No.577953-88-9
Mol. F.C47H59ClN2O3S
Mol. W.767.50 g/mol
Stock Status:Custom Synthesis

Montelukast Dehydro Impurity

Montelukast Dehydro Impurity

CAT. No.M050040
CAS. No.NA
Mol. F.C29H26ClNO
Mol. W.439.98 g/mol
Stock Status:Custom Synthesis

Montelukast R-Sulfoxide

Montelukast R-Sulfoxide

CAT. No.M050046
CAS. No.1152185-58-4
Mol. F.C35H36ClNO4S
Mol. W.602.18 g/mol
Stock Status:Custom Synthesis

Montelukast Dehydro Impurity

Montelukast Dehydro Impurity

CAT. No.M050047
CAS. No.168214-68-4
Mol. F.C29H26ClNO
Mol. W.439.98 g/mol
Stock Status:Custom Synthesis

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

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

CAT. No.M050048
CAS. No.NA
Mol. F.C33H30ClNO4S
Mol. W.572.11 g/mol
Stock Status:Custom Synthesis

Montelukast (3RS)-Hydroxy Propanol

Montelukast (3RS)-Hydroxy Propanol

CAT. No.M050049
CAS. No.959235-68-8
Mol. F.C29H28ClNO2
Mol. W.457.99 g/mol
Stock Status:Custom Synthesis

Montelukast Impurity 3

Montelukast Impurity 3

CAT. No.M050050
CAS. No.152922-71-9
Mol. F.C6H9NO
Mol. W.111.14 g/mol
Stock Status:Custom Synthesis

Montelukast Impurity

Montelukast Impurity

CAT. No.M050051
CAS. No.152922-86-6
Mol. F.C7H11NO3S
Mol. W.189.23 g/mol
Stock Status:Custom Synthesis

((E))-2-(3-(3-(2-(7-Chloro-2-quinolinyl)ethyl)phenyl)-3-hydroxypropyl)-benzoic acid methyl ester

((E))-2-(3-(3-(2-(7-Chloro-2-quinolinyl)ethyl)phenyl)-3-hydroxypropyl)-benzoic acid methyl ester

CAT. No.M050052
CAS. No.NA
Mol. F.C28H26ClNO3
Mol. W.459.96 g/mol
Stock Status:Custom Synthesis

Montelukast (3S)-Hydroxy Benzoate

Montelukast (3S)-Hydroxy Benzoate

CAT. No.M050053
CAS. No.142569-69-5
Mol. F.C28H24ClNO3
Mol. W.457.95 g/mol
Stock Status:Custom Synthesis

Montelukast Disulfide Dimethyl Ester

Montelukast Disulfide Dimethyl Ester

CAT. No.M050054
CAS. No.1446481-28-2
Mol. F.C14H22O4S2
Mol. W.318.45 g/mol
Stock Status:Custom Synthesis

Montelukast Acid Methyl Ester Impurity

Montelukast Acid Methyl Ester Impurity

CAT. No.M050055
CAS. No.855473-51-7
Mol. F.C36H38ClNO3S
Mol. W.600.21 g/mol
Stock Status:Custom Synthesis

Montelukast Impurity 14

Montelukast Impurity 14

CAT. No.M050056
CAS. No.120578-03-2
Mol. F.C18H12ClNO
Mol. W.293.75 g/mol
Stock Status:Custom Synthesis

1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]prop-2-en-1-ol

1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]prop-2-en-1-ol

CAT. No.M050057
CAS. No.149968-10-5
Mol. F.C20H16ClNO
Mol. W.321.80 g/mol
Stock Status:Custom Synthesis

Montelukast + Montelukast EP Impurity A

Montelukast + Montelukast EP Impurity A

CAT. No.M050058
CAS. No.NA
Mol. F.C35H36ClNO3S
Mol. W.586.18 g/mol
Stock Status:Custom Synthesis

Montelukast KSM-II Lactone Impurity

Montelukast KSM-II Lactone Impurity

CAT. No.M050060
CAS. No.162515-66-4
Mol. F.C8H8OS
Mol. W.128.19 g/mol
Stock Status:Custom Synthesis

Montelukast R-Sulfoxide

Montelukast R-Sulfoxide

CAT. No.M050061
CAS. No.184763-47-1
Mol. F.C35H36ClNO4S
Mol. W.602.18 g/mol
Stock Status:Custom Synthesis

Montelukast EP Impurity I Sodium Salt (Mixture of Diastereomers)

Montelukast EP Impurity I Sodium Salt (Mixture of Diastereomers)

CAT. No.M050062
CAS. No.NA
Mol. F.C35H35ClNNaO4S
Mol. W.624.16 g/mol
Stock Status:Custom Synthesis

Methyl2-(3-{3-[2-(7-chloroquinolin-2-yl)vinyl]phenyl}-3-oxopropyl)benzoate

Methyl2-(3-{3-[2-(7-chloroquinolin-2-yl)vinyl]phenyl}-3-oxopropyl)benzoate

CAT. No.M050063
CAS. No.133791-17-0
Mol. F.C28H22ClNO3
Mol. W.455.93 g/mol
Stock Status:Custom Synthesis

1-(Mercaptomethyl)cyclopropyl acetamide

1-(Mercaptomethyl)cyclopropyl acetamide

CAT. No.M050064
CAS. No.NA
Mol. F.C6H11NOS
Mol. W.145.22 g/mol
Stock Status:Custom Synthesis

Montelukast Impurity 19

Montelukast Impurity 19

CAT. No.M050065
CAS. No.181139-72-0
Mol. F.C28H24ClNO3
Mol. W.457.95 g/mol
Stock Status:Custom Synthesis

1,1-Cyclopropanedimethanol cyclic sulfite

1,1-Cyclopropanedimethanol cyclic sulfite

CAT. No.M050066
CAS. No.153493-52-8
Mol. F.C5H8O3S
Mol. W.148.17 g/mol
Stock Status:Custom Synthesis

Montelukast Impurity 15

Montelukast Impurity 15

CAT. No.M050067
CAS. No.152922-72-0
Mol. F.C8H11NOS
Mol. W.169.20 g/mol
Stock Status:Custom Synthesis

2,2`-(Cyclopropane-1,1-diyl)diacetic acid

2,2`-(Cyclopropane-1,1-diyl)diacetic acid

CAT. No.M050068
CAS. No.70197-77-2
Mol. F.C7H10O4
Mol. W.158.15 g/mol
Stock Status:Custom Synthesis

Montelukast Impurity 9

Montelukast Impurity 9

CAT. No.M050069
CAS. No.807638-71-7
Mol. F.C30H30ClNO4S
Mol. W.536.08 g/mol
Stock Status:Custom Synthesis

Montelukast Impurity 21

Montelukast Impurity 21

CAT. No.M050070
CAS. No.162515-69-7
Mol. F.C6H11NOS
Mol. W.145.22 g/mol
Stock Status:Custom Synthesis

Montelukast Impurity 22

Montelukast Impurity 22

CAT. No.M050071
CAS. No.1079753-36-8
Mol. F.C29H28ClNO2
Mol. W.457.99 g/mol
Stock Status:Custom Synthesis

Montelukast EP Impurity D / E

Montelukast EP Impurity D / E

CAT. No.M050072
CAS. No.1242260-05-4
Mol. F.C41H46ClNO5S2
Mol. W.1464.78 g/mol
Stock Status:Custom Synthesis

Metabolites

Montelukast Acyl-b-D-glucuronide

Montelukast Acyl-b-D-glucuronide

CAT. No.M050042
CAS. No.188717-17-1
Mol. F.C41H44ClNO9S
Mol. W.762.31 g/mol
Stock Status:Custom Synthesis

Isotope Labelled Compounds

Montelukast-D6 Sodium Salt

Montelukast-D6 Sodium Salt

CAT. No.M050021
CAS. No.2673270-26-1
Mol. F.C35H29D6ClNO3S.Na
Mol. W.614.20 g/mol
Stock Status:Instock

Montelukast D6

Montelukast D6

CAT. No.M050059
CAS. No.1093746-29-2
Mol. F.C35H30D6ClNO3S
Mol. W.592.22 g/mol
Stock Status:Custom Synthesis