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Version5.0
StatusExpected but not Quantified
Creation Date2012-09-06 15:16:49 UTC
Update Date2022-03-07 02:51:41 UTC
HMDB IDHMDB0014614
Secondary Accession Numbers
  • HMDB14614
Metabolite Identification
Common NameMontelukast
DescriptionMontelukast is a leukotriene receptor antagonist (LTRA) used for the maintenance treatment of asthma and to relieve symptoms of seasonal allergies. It is usually administered orally. Montelukast blocks the action of leukotriene D4 on the cysteinyl leukotriene receptor CysLT1 in the lungs and bronchial tubes by binding to it. This reduces the bronchoconstriction otherwise caused by the leukotriene, and results in less inflammation. Because of its method of operation, it is not useful for the treatment of acute asthma attacks. Again because of its very specific locus of operation, it does not interact with other allergy medications such as theophylline. Montelukast is marketed in United States and many other countries by Merck & Co. with the brand name Singulair. It is available as oral tablets, chewable tablets, and oral granules. In India and other countries, it is also marketed under the brand name Montair®, produced by Indian company Cipla.
Structure
Data?1582753199
Synonyms
ValueSource
(R-(e))-1-(((1-(3-(2-(7-Chloro-2-quinolinyl)ethenyl)phenyl)-3-(2-(1-hydroxy-1-methylethyl)phenyl)propyl)thio)methyl)cyclopropaneacetic acidChEBI
1-[[[(1 R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl] phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfanyl]methyl]cyclopropaneacetic acidChEBI
BrondilatKegg
(R-(e))-1-(((1-(3-(2-(7-Chloro-2-quinolinyl)ethenyl)phenyl)-3-(2-(1-hydroxy-1-methylethyl)phenyl)propyl)thio)methyl)cyclopropaneacetateGenerator
1-[[[(1 R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl] phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfanyl]methyl]cyclopropaneacetateGenerator
1-[[[(1 R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl] phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulphanyl]methyl]cyclopropaneacetateGenerator
1-[[[(1 R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl] phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulphanyl]methyl]cyclopropaneacetic acidGenerator
Merck brand OF montelukast sodiumHMDB
SingulairHMDB
Montelukast sodiumHMDB
Sodium 1-(((1-(3-(2-(7-chloro-2-quinolinyl)ethenyl)phenyl)-3-(2-(1-hydroxy-1-methylethyl)phenyl)propyl)thio)methyl)cyclopropylacetateHMDB
Cahill may roberts brand OF montelukast sodiumHMDB
Merck frosst brand OF montelukast sodiumHMDB
Merck sharp and dohme brand OF montelukast sodiumHMDB
Chemical FormulaC35H36ClNO3S
Average Molecular Weight586.183
Monoisotopic Molecular Weight585.21044242
IUPAC Name2-[1-({[(1R)-1-{3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl}-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfanyl}methyl)cyclopropyl]acetic acid
Traditional Namemontelukast
CAS Registry Number158966-92-8
SMILES
OC(=O)CC1(CC1)CS[C@H](CCC1=CC=CC=C1C(O)(C)C)C1=CC=CC(\C=C\C2=NC3=C(C=CC(Cl)=C3)C=C2)=C1
InChI Identifier
InChI=1S/C35H36ClNO3S/c1-34(2,40)30-9-4-3-7-25(30)13-17-32(41-23-35(18-19-35)22-33(38)39)27-8-5-6-24(20-27)10-15-29-16-12-26-11-14-28(36)21-31(26)37-29/h3-12,14-16,20-21,32,40H,13,17-19,22-23H2,1-2H3,(H,38,39)/b15-10+/t32-/m1/s1
InChI KeyUCHDWCPVSPXUMX-TZIWLTJVSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as linear 1,3-diarylpropanoids. These are organic compounds with a structure based on a C6-C3-C6 skeleton, where the two benzene rings are not linked together.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassLinear 1,3-diarylpropanoids
Sub ClassNot Available
Direct ParentLinear 1,3-diarylpropanoids
Alternative Parents
Substituents
  • Linear 1,3-diarylpropanoid
  • Haloquinoline
  • Chloroquinoline
  • Quinoline
  • Phenylpropane
  • Styrene
  • Hydroxy fatty acid
  • Thia fatty acid
  • Aryl chloride
  • Aryl halide
  • Monocyclic benzene moiety
  • Pyridine
  • Fatty acyl
  • Benzenoid
  • Heteroaromatic compound
  • Tertiary alcohol
  • Thioether
  • Dialkylthioether
  • Sulfenyl compound
  • Organoheterocyclic compound
  • Azacycle
  • Carboxylic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Aromatic alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Organochloride
  • Organohalogen compound
  • Organosulfur compound
  • Organic oxide
  • Hydrocarbon derivative
  • Alcohol
  • Carbonyl group
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water Solubility8.2e-06 g/LNot Available
LogP7.9Not Available
Experimental Chromatographic Properties

Experimental Collision Cross Sections

Adduct TypeData SourceCCS Value (Å2)Reference
[M+H]+CBM243.030932474
Predicted Molecular Properties
PropertyValueSource
Water Solubility8.2e-06 g/LALOGPS
logP7.25ALOGPS
logP8.49ChemAxon
logS-7.8ALOGPS
pKa (Strongest Acidic)4.4ChemAxon
pKa (Strongest Basic)3.12ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area70.42 ŲChemAxon
Rotatable Bond Count12ChemAxon
Refractivity169.5 m³·mol⁻¹ChemAxon
Polarizability66.36 ųChemAxon
Number of Rings5ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+230.21330932474
DeepCCS[M-H]-228.28130932474
DeepCCS[M-2H]-261.5230932474
DeepCCS[M+Na]+236.02430932474
AllCCS[M+H]+244.732859911
AllCCS[M+H-H2O]+243.232859911
AllCCS[M+NH4]+246.032859911
AllCCS[M+Na]+246.432859911
AllCCS[M-H]-228.932859911
AllCCS[M+Na-2H]-231.132859911
AllCCS[M+HCOO]-233.632859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
MontelukastOC(=O)CC1(CC1)CS[C@H](CCC1=CC=CC=C1C(O)(C)C)C1=CC=CC(\C=C\C2=NC3=C(C=CC(Cl)=C3)C=C2)=C16300.0Standard polar33892256
MontelukastOC(=O)CC1(CC1)CS[C@H](CCC1=CC=CC=C1C(O)(C)C)C1=CC=CC(\C=C\C2=NC3=C(C=CC(Cl)=C3)C=C2)=C14444.9Standard non polar33892256
MontelukastOC(=O)CC1(CC1)CS[C@H](CCC1=CC=CC=C1C(O)(C)C)C1=CC=CC(\C=C\C2=NC3=C(C=CC(Cl)=C3)C=C2)=C15064.5Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Montelukast,1TMS,isomer #1CC(C)(O)C1=CC=CC=C1CC[C@@H](SCC1(CC(=O)O[Si](C)(C)C)CC1)C1=CC=CC(/C=C/C2=CC=C3C=CC(Cl)=CC3=N2)=C14875.9Semi standard non polar33892256
Montelukast,1TMS,isomer #2CC(C)(O[Si](C)(C)C)C1=CC=CC=C1CC[C@@H](SCC1(CC(=O)O)CC1)C1=CC=CC(/C=C/C2=CC=C3C=CC(Cl)=CC3=N2)=C14938.5Semi standard non polar33892256
Montelukast,2TMS,isomer #1CC(C)(O[Si](C)(C)C)C1=CC=CC=C1CC[C@@H](SCC1(CC(=O)O[Si](C)(C)C)CC1)C1=CC=CC(/C=C/C2=CC=C3C=CC(Cl)=CC3=N2)=C14827.1Semi standard non polar33892256
Montelukast,1TBDMS,isomer #1CC(C)(O)C1=CC=CC=C1CC[C@@H](SCC1(CC(=O)O[Si](C)(C)C(C)(C)C)CC1)C1=CC=CC(/C=C/C2=CC=C3C=CC(Cl)=CC3=N2)=C15128.4Semi standard non polar33892256
Montelukast,1TBDMS,isomer #2CC(C)(O[Si](C)(C)C(C)(C)C)C1=CC=CC=C1CC[C@@H](SCC1(CC(=O)O)CC1)C1=CC=CC(/C=C/C2=CC=C3C=CC(Cl)=CC3=N2)=C15189.7Semi standard non polar33892256
Montelukast,2TBDMS,isomer #1CC(C)(O[Si](C)(C)C(C)(C)C)C1=CC=CC=C1CC[C@@H](SCC1(CC(=O)O[Si](C)(C)C(C)(C)C)CC1)C1=CC=CC(/C=C/C2=CC=C3C=CC(Cl)=CC3=N2)=C15303.3Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Montelukast GC-MS (Non-derivatized) - 70eV, Positivesplash10-002f-8200940000-737f7d3443710f11b1d12017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Montelukast GC-MS (1 TMS) - 70eV, Positivesplash10-000f-6610918000-a8fd6048261f76c14cfe2017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Montelukast GC-MS ("Montelukast,1TMS,#1" TMS) - 70eV, PositiveNot Available2021-10-14Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Montelukast GC-MS (TMS_1_2) - 70eV, PositiveNot Available2021-10-15Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Montelukast GC-MS (TMS_2_1) - 70eV, PositiveNot Available2021-10-15Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Montelukast GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-10-15Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Montelukast GC-MS (TBDMS_1_2) - 70eV, PositiveNot Available2021-10-15Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Montelukast GC-MS (TBDMS_2_1) - 70eV, PositiveNot Available2021-10-15Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 10V, Positive-QTOFsplash10-02ti-1200290000-7725c97cf7d6852f1a3a2016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 20V, Positive-QTOFsplash10-03k9-3621890000-f0776c5b36cdf2c178f62016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 40V, Positive-QTOFsplash10-03di-6759410000-a97710ff6bb5322ea9102016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 10V, Negative-QTOFsplash10-0fk9-0100940000-4313dcc16307296754042016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 20V, Negative-QTOFsplash10-0fk9-1100920000-b4afcd6b4074ff107c2a2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 40V, Negative-QTOFsplash10-0a4j-8943500000-be069e66cc0c2230329c2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 10V, Positive-QTOFsplash10-000i-0200190000-fd271d41a440a384395a2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 20V, Positive-QTOFsplash10-00di-4302950000-5e3aaf420bf5f896e62c2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 40V, Positive-QTOFsplash10-0f79-6576950000-696368916493bebcb7c52021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 10V, Negative-QTOFsplash10-001i-0000190000-aec216b4ad35615446342021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 20V, Negative-QTOFsplash10-0uk9-1300910000-73c58a5b7f71fb0cf7f12021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Montelukast 40V, Negative-QTOFsplash10-0gz9-4512930000-9b36ec7bf9f131bb7cc42021-09-25Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Cytoplasm
  • Membrane
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableTaking drug identified by DrugBank entry DB00471 details
UrineExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableTaking drug identified by DrugBank entry DB00471 details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB00471
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID4444507
KEGG Compound IDC07482
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkMontelukast
METLIN IDNot Available
PubChem Compound5281040
PDB IDMTK
ChEBI ID50730
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available

Enzymes

General function:
Involved in metal ion binding
Specific function:
Catalyzes the first step in leukotriene biosynthesis, and thereby plays a role in inflammatory processes.
Gene Name:
ALOX5
Uniprot ID:
P09917
Molecular weight:
77982.595
References
  1. Ramires R, Caiaffa MF, Tursi A, Haeggstrom JZ, Macchia L: Novel inhibitory effect on 5-lipoxygenase activity by the anti-asthma drug montelukast. Biochem Biophys Res Commun. 2004 Nov 12;324(2):815-21. [PubMed:15474500 ]
General function:
Involved in peroxidase activity
Specific function:
May play an important role in regulating or promoting cell proliferation in some normal and neoplastically transformed cells.
Gene Name:
PTGS1
Uniprot ID:
P23219
Molecular weight:
68685.82
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [PubMed:19515014 ]
General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4-hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Acts as a 1,8-cineole 2-exo-monooxygenase. The enzyme also hydroxylates etoposide.
Gene Name:
CYP3A4
Uniprot ID:
P08684
Molecular weight:
57255.585
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [PubMed:19515014 ]
General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. This enzyme contributes to the wide pharmacokinetics variability of the metabolism of drugs such as S-warfarin, diclofenac, phenytoin, tolbutamide and losartan.
Gene Name:
CYP2C9
Uniprot ID:
P11712
Molecular weight:
55627.365
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [PubMed:19515014 ]
General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. In the epoxidation of arachidonic acid it generates only 14,15- and 11,12-cis-epoxyeicosatrienoic acids. It is the principal enzyme responsible for the metabolism the anti-cancer drug paclitaxel (taxol).
Gene Name:
CYP2C8
Uniprot ID:
P10632
Molecular weight:
55824.275
References
  1. Schoch GA, Yano JK, Sansen S, Dansette PM, Stout CD, Johnson EF: Determinants of cytochrome P450 2C8 substrate binding: structures of complexes with montelukast, troglitazone, felodipine, and 9-cis-retinoic acid. J Biol Chem. 2008 Jun 20;283(25):17227-37. doi: 10.1074/jbc.M802180200. Epub 2008 Apr 15. [PubMed:18413310 ]
  2. Walsky RL, Gaman EA, Obach RS: Examination of 209 drugs for inhibition of cytochrome P450 2C8. J Clin Pharmacol. 2005 Jan;45(1):68-78. [PubMed:15601807 ]
  3. Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. doi: 10.1093/nar/gkp970. Epub 2009 Nov 24. [PubMed:19934256 ]
General function:
Involved in monooxygenase activity
Specific function:
Exhibits a high coumarin 7-hydroxylase activity. Can act in the hydroxylation of the anti-cancer drugs cyclophosphamide and ifosphamide. Competent in the metabolic activation of aflatoxin B1. Constitutes the major nicotine C-oxidase. Acts as a 1,4-cineole 2-exo-monooxygenase. Possesses low phenacetin O-deethylation activity.
Gene Name:
CYP2A6
Uniprot ID:
P11509
Molecular weight:
56517.005
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [PubMed:19515014 ]
General function:
Involved in G-protein coupled receptor protein signaling pathway
Specific function:
Receptor for cysteinyl leukotrienes mediating bronchoconstriction of individuals with and without asthma. Stimulation by LTD4 results in the contraction and proliferation of smooth muscle, edema, eosinophil migration and damage to the mucus layer in the lung. This response is mediated via a G-protein that activates a phosphatidylinositol-calcium second messenger system. The rank order of affinities for the leukotrienes is LTD4 >> LTE4 = LTC4 >> LTB4
Gene Name:
CYSLTR1
Uniprot ID:
Q9Y271
Molecular weight:
38540.5
References
  1. Nayak A: A review of montelukast in the treatment of asthma and allergic rhinitis. Expert Opin Pharmacother. 2004 Mar;5(3):679-86. [PubMed:15013935 ]
  2. Zhang YJ, Zhang L, Wang SB, Shen HH, Wei EQ: Montelukast modulates lung CysLT(1) receptor expression and eosinophilic inflammation in asthmatic mice. Acta Pharmacol Sin. 2004 Oct;25(10):1341-6. [PubMed:15456537 ]
  3. Hamacher J, Eichert K, Braun C, Grebe T, Strub A, Lucas R, Eltze M, Wendel A: Montelukast exerts no acute direct effect on NO synthases. Pulm Pharmacol Ther. 2007;20(5):525-33. Epub 2006 May 19. [PubMed:16815057 ]
  4. Langlois A, Ferland C, Tremblay GM, Laviolette M: Montelukast regulates eosinophil protease activity through a leukotriene-independent mechanism. J Allergy Clin Immunol. 2006 Jul;118(1):113-9. Epub 2006 May 19. [PubMed:16815146 ]
  5. Alfieri AB, Tramontana M, Cialdai C, Lecci A, Giuliani S, Crea A, Manzini S, Maggi CA: Heterogeneous effect of leucotriene CysLT1 receptor antagonists on antigen-induced motor and inflammatory responses in guinea-pig airways. Auton Autacoid Pharmacol. 2007 Jan;27(1):39-46. [PubMed:17199874 ]
  6. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [PubMed:11752352 ]

Transporters

General function:
Involved in transporter activity
Specific function:
Mediates the Na(+)-independent transport of organic anions such as taurocholate, the prostaglandins PGD2, PGE1, PGE2, leukotriene C4, thromboxane B2 and iloprost
Gene Name:
SLCO2B1
Uniprot ID:
O94956
Molecular weight:
76697.9
References
  1. Mougey EB, Feng H, Castro M, Irvin CG, Lima JJ: Absorption of montelukast is transporter mediated: a common variant of OATP2B1 is associated with reduced plasma concentrations and poor response. Pharmacogenet Genomics. 2009 Feb;19(2):129-38. doi: 10.1097/FPC.0b013e32831bd98c. [PubMed:19151602 ]