For research use only.
Catalog No.S4211 Synonyms: MK-0476
CAS No. 151767-02-1
Montelukast (MK-0476) selectively antagonizes leukotriene D4 (LTD4) by binding to it so that block the action of leukotriene D4 on the cysteinyl leukotriene receptor CysLT1. Montelukast improves macroautophagy but not the chaperone-mediated autophagy pathway. Precipitations may form after reconstitution,solution is best fresh-prepared.
Selleck's Montelukast Sodium has been cited by 5 publications
Purity & Quality Control
Choose Selective LTR Inhibitors
|Description||Montelukast (MK-0476) selectively antagonizes leukotriene D4 (LTD4) by binding to it so that block the action of leukotriene D4 on the cysteinyl leukotriene receptor CysLT1. Montelukast improves macroautophagy but not the chaperone-mediated autophagy pathway. Precipitations may form after reconstitution,solution is best fresh-prepared.|
Montelukast is a leukotriene receptor antagonist (LTRA) used for the maintenance treatment of asthma and to relieve symptoms of seasonal allergies. Montelukast blocks the action of leukotriene D4 on the cysteinyl leukotriene receptor CysLT1 in the lungs and bronchial tubes by binding to it, preventing airway edema, smooth muscle contraction, and enhanced secretion of thick, viscous mucus. This reduces the bronchoconstriction otherwise caused by the leukotriene, and results in less inflammation. 
|In vivo||Montelukast (6 mg/kg, once per day for 20 d) significantly suppresses the increased eosinophils in BAL fluid and lung tissue, and increases IL-5 level in BAL fluid in OVA challenged mice. OVA challenge increases CysLT1 but decreases CysLT2 receptor mRNA expression. Montelukast inhibits the increased CysLT1 but not the reduces CysLT2 expression after OVA challenge. |
|In vitro||DMSO||100 mg/mL (164.42 mM)|
|Water||100 mg/mL (164.42 mM)|
|Ethanol||100 mg/mL (164.42 mM)|
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
|Storage||3 years -20°C powder|
In vivo Formulation Calculator (Clear solution)
|Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)|
|Dosage||mg/kg||Average weight of animals||g||Dosing volume per animal||ul||Number of animals|
|Step 2: Enter the in vivo formulation ()|
|% DMSO % % Tween 80 % ddH2O|
Working concentration： mg/ml；
Method for preparing DMSO master liquid: ： mg drug pre-dissolved in μL DMSO (Master liquid concentration mg/mL，)
Method for preparing in vivo formulation：Take μL DMSO master liquid, next addμL PEG300， mix and clarify, next addμL Tween 80，mix and clarify, next add μL ddH2O，mix and clarify.
1.Please make sure the liquid is clear before adding the next solvent.
2.Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:
Mass (mg) = Concentration (mM) × Volume (mL) × Molecular Weight (g/mol)
*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and SDS / COA (available on product pages).
Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )
* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / COA (available online).
Molecular Weight Calculator
Enter the chemical formula of a compound to calculate its molar mass and elemental composition:
Tip: Chemical formula is case sensitive. C10H16N2O2 c10h16n2o2
Instructions to calculate molar mass (molecular weight) of a chemical compound:
To calculate molar mass of a chemical compound, please enter its chemical formula and click 'Calculate'.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Clinical Trial Information
|NCT Number||Recruitment||interventions||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT04351698||Not yet recruiting||Drug: Montelukast|Other: Oral Placebo||Anemia Sickle Cell|Sleep-Disordered Breathing||Great Ormond Street Hospital for Children NHS Foundation Trust|Guy''s and St Thomas'' NHS Foundation Trust|University College London Hospitals|North Middlesex University Hospital|King''s College Hospital NHS Trust|The Whittington Hospital NHS Trust||August 1 2021||Phase 2|Phase 3|
|NCT03545997||Terminated||Drug: Montelukast 10mg|Drug: Placebo||Sleep Apnea Obstructive||University Hospital Grenoble|Act For Chronic Diseases|Direction Générale de l''Offre de Soins||November 29 2019||Phase 3|
|NCT03991988||Recruiting||Drug: Montelukast|Drug: Placebo oral tablet||Alzheimer Disease||Emory University||September 25 2019||Phase 2|
|NCT03898193||Completed||Drug: Montelukast|Drug: Singulair||Healthy Adults||Pharmtechnology LLC|ClinPharmInvest LLC||March 23 2019||Phase 1|
|NCT03380975||Completed||Drug: Montelukast 10mg||Asthma and Allergic Rhinitis||Clinision||August 28 2018||Phase 4|
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
Tel: +1-832-582-8158 Ext:3
If you have any other enquiries, please leave a message.