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Montelukast Montelukast (MK0476 free base) is a potent, selective and orally active antagonist of cysteinyl leukotriene receptor 1 (CysLT 1 ). Montelukast can be used for the reseach of asthma and liver injury. Montelukast also has an antioxidant effect in intestinal ischemia-reperfusion injury, and could reduce cardiac damage. Montelukast decreases eosinophil infiltration into the asthmatic airways. Montelukast can also be used for COVID-19 research [1] [2] [3] [4]. Uses: Scientific research. Group: Signaling pathways. Alternative Names: MK0476 free base. CAS No. 158966-92-8. Pack Sizes: 10 mM * 1 mL; 50 mg; 100 mg. Product ID: HY-13315A. MedChemExpress MCE
Montelukast 1,2-diol Montelukast 1,2-diol. Uses: Designed for use in research and industrial production. Additional or Alternative Names: 1-[1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1,2-diol-2-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic;M6a,b;Montelukast 1,2-Diol?(Mixture of diastereomers). Product Category: Heterocyclic Organic Compound. Appearance: Yellow Solid. CAS No. 186352-97-6. Molecular formula: C35H36ClNO4S. Product ID: ACM186352976. Alfa Chemistry — ISO 9001:2015 Certified. Alfa Chemistry. 4
Montelukast 1,2-Dio(Mixture of Diastereomers) Montelukast 1,2-Dio(Mixture of Diastereomers). CAS No: 186352-97-6 Sarchem Laboratories
Sarchem Laboratories New Jersey NJ
Montelukast Acyl- β-D-glucuronide-d6 A labeled metabolite of Montelukast. Group: Biochemicals. Alternative Names: 1- [1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl-d6) phenyl] propyl] thio] methyl] cyclopropaneacetate] β-D-Glucopyranuronic Acid. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
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Montelukast Bis-sulfide (mixture of diastereomers) Montelukast Bis-sulfide (mixture of diastereomers). Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 1-[[[(1R)-1-[3-[(1RS)-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, Montekulast Sodium Imp. D+E (Mixture of Stereoisomers) (EP), 1-[[[(1R)-1-[3-[1-[[[1-(Carboxymethyl)cyclopropyl]methyl]thio]-2-(7-chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic Acid. CAS No. 1242260-05-4. Pack Sizes: 10MG. IUPAC Name: 2-[1-[[(1R)-1-[3-[1-[[1-(carboxymethyl)cyclopropyl]methylsulfanyl]-2-(7-chloroquinolin-2-yl)ethyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfanylmethyl]cyclopropyl]acetic acid. Molecular formula: C41H46ClNO5S2. Mole weight: 732.39. Catalog: APS1242260054. SMILES: CC(C)(O)c1ccccc1CC[C@@H](SCC2(CC(=O)O)CC2)c3cccc(c3)C(Cc4ccc5ccc(Cl)cc5n4)SCC6(CC(=O)O)CC6. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products 4
Montelukast Bis-sulfide (Mixture of Diastereomers) Montelukast impurity. Group: Biochemicals. Alternative Names: 1- [ [ [ (1R) -1- [3- [ (1R) -1- [ [ [1- (Carboxymethyl) cyclopropyl] methyl] thio] -2- (7-chloro-2-quinolinyl) ethyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] cyclopropaneacetic Acid. Grades: Highly Purified. CAS No. 1187586-61-3. Pack Sizes: 10mg. US Biological Life Sciences. USBiological 2
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Montelukast cyclizate ether impurity Montelukast cyclizate ether impurity. Group: Biochemicals. Alternative Names: 7-Chloro-2- [2- [3- (1, 3, 4, 5-tetrahydro-1, 1-dimethyl-2-benzoxepin-3-yl) phenyl] ethenyl] quinoline. Grades: Highly Purified. CAS No. 168214-67-3. Pack Sizes: 2mg, 5mg, 10mg, 25mg, 50mg. Molecular Formula: C29H26ClNO. US Biological Life Sciences. USBiological 8
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Montelukast Cyclizate Ether Impurity Montelukast Cyclizate Ether Impurity. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (E)-7-chloro-2-(3-(1,1-dimethyl-1,3,4,5-tetrahydrobenzo[c]oxepin-3-yl)styryl)quinoline. CAS No. 1040351-42-5. Molecular formula: C29H26ClNO. Mole weight: 439.98. Catalog: APB1040351425. Alfa Chemistry Analytical Products 4
Montelukast Cyclized Ether impurity Montelukast Cyclized Ether impurity. Uses: For analytical and research use. Group: Impurity standards. CAS No. 168214-67-3. Pack Sizes: 5MG. IUPAC Name: 7-chloro-2-[2-[3-(1,1-dimethyl-4,5-dihydro-3H-2-benzoxepin-3-yl)phenyl]ethenyl]quinoline. Molecular formula: C29H26ClNO. Mole weight: 439.98. Catalog: APS168214673. SMILES: CC1(C)OC(CCc2ccccc12)c3cccc(C=Cc4ccc5ccc(Cl)cc5n4)c3. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products 4
Montelukast cyclopropaneacetamide-d6 (Impurity) Montelukast cyclopropaneacetamide-d6 (Impurity). Group: Biochemicals. Alternative Names: 1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] -cyclopropaneacetamide-d6. Grades: Highly Purified. Pack Sizes: 1mg. Molecular Formula: C35H31D6ClN2O2S, Molecular Weight: 591.24. US Biological Life Sciences. USBiological 3
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Montelukast cyclopropaneacetamide (Impurity) Montelukast cyclopropaneacetamide (Impurity). Group: Biochemicals. Alternative Names: 1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] -cyclopropaneacetamide. Grades: Highly Purified. CAS No. 866923-63-9. Pack Sizes: 10mg. Molecular Formula: C35H37ClN2O2S, Molecular Weight: 585.2. US Biological Life Sciences. USBiological 3
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Montelukast Cyclopropane acetonitrile Montelukast Cyclopropane acetonitrile. Group: Biochemicals. Alternative Names: 1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1- methyl ethyl) phenyl] propyl ] thio] methyl ] cyclopropane acetonitrile. Grades: Highly Purified. CAS No. 866923-62-8. Pack Sizes: 5mg. Molecular Formula: C35H35ClN2OS, Molecular Weight: 567.179999999999. US Biological Life Sciences. USBiological 3
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Montelukast Cyclopropane acetonitrile-d6 Montelukast Cyclopropane acetonitrile-d6. Group: Biochemicals. Alternative Names: 1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1- methyl ethyl) phenyl] propyl ] thio] methyl ] cyclopropane acetonitrile-d6. Grades: Highly Purified. Pack Sizes: 1mg. Molecular Formula: C35H29D6ClN2OS, Molecular Weight: 573.22. US Biological Life Sciences. USBiological 3
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Montelukast-[d6] Montelukast-[d6] is the labelled analogue of Montelukast, which is a leukotriene receptor antagonist (LTRA) used for the maintenance treatment of asthma and to relieve symptoms of seasonal allergies. Synonyms: Montelukast D6; 1-[[[(1R)-1-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-[1-hydroxy-1-(methyl-d3)ethyl-2,2,2-d3]phenyl]propyl]thio]methyl]cyclopropaneacetic Acid. Grade: 95% by HPLC; 95% atom D. CAS No. 1093746-29-2. Molecular formula: C35H30D6ClNO3S. Mole weight: 592.24. BOC Sciences 2
Montelukast-d6, Sodium Salt (1- [1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl-d6) phenyl] propyl] thio] methyl] cyclopropaneacetic Acid Sodium Salt, MK-476-d6, Singulair) A selective leukotriene D4-receptor antagonist. Used as an antiasthmatic. Group: Biochemicals. Alternative Names: 1- [1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl-d6) phenyl] propyl] thio] methyl] cyclopropaneacetic Acid Sodium Salt; MK-476-d6, Singulair. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 1
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Montelukast dicyclohexylamine United States Pharmacopeia (USP) Reference Standard. Group: Pharmacopeia & metrological institutes standardsbritish pharmacopoeiaeuropean pharmacopoeia (ph. eur.)impurity standardspharmaceutical toxicologypharmacopoeial standards. Alternative Names: 2-[1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropyl]acetic acid dicyclohexylamine salt, Cyclopropaneacetic acid, 1-[[[(1R)-1-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-, compd. with N-cyclohexylcyclohexanamine (1:1) (9CI),Montelukast Dicyclohexylamine, Montelukast dicyclohexylamine salt. Alfa Chemistry Analytical Products
Montelukast Dicyclohexylamine Salt A selective leukotriene D4-receptor antagonist. Used as an antiasthmatic. Group: Biochemicals. Alternative Names: 1- [1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] cyclopropaneacetic N-Cyclohexyl cyclohexanamine; Montelukast DCHA. Grades: Highly Purified. CAS No. 577953-88-9. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
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Montelukast for peak identification United States Pharmacopeia (USP) Reference Standard. Group: Pharmacopeia & metrological institutes standards. Alfa Chemistry Analytical Products
Montelukast Impurity 2 Montelukast Impurity 2. Uses: For analytical and research use. Group: Impurity standards. CAS No. 168214-68-4. Molecular formula: C29H26ClNO. Mole weight: 439.98. Catalog: APB168214684. Alfa Chemistry Analytical Products 4
Montelukast Ketocarbinol Impurity Montelukast Ketocarbinol Impurity. Uses: For analytical and research use. Group: Impurity standards. Catalog: APS002376. Format: Neat. Alfa Chemistry Analytical Products 4
Montelukast Ketocarbinol Impurity Montelukast Ketocarbinol is an impurity of the antiasthmatic drug Montelukast. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 3
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Montelukast Methyl Ketone Montelukast impurity. A leukotriene antagonist useful as anti-asthmatic, anti-allergic, anti-inflammatory and cytoprotective agent. Group: Biochemicals. Alternative Names: 1-[[[(1R)-3-(2-Acetylphenyl)-1-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]p. Grades: Highly Purified. CAS No. 937275-23-5. Pack Sizes: 25mg. US Biological Life Sciences. USBiological 2
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Montelukast Methyl Ketone Montelukast Methyl Ketone. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Montekulast Sodium Imp. F (EP), Mok-3 Keto,1-[[[(1R)-3-(2-Acetylphenyl)-1-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]propyl]thio]methyl]-cyclopropaneacetic Acid, Montelukast Methyl Ketone. CAS No. 937275-23-5. Pack Sizes: 10MG. IUPAC Name: 2-[1-[[(1R)-3-(2-acetylphenyl)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]propyl]sulfanylmethyl]cyclopropyl]acetic acid. Molecular formula: C34H32ClNO3S. Mole weight: 570.14. Catalog: APS937275235. SMILES: CC(=O)c1ccccc1CC[C@@H](SCC2(CC(=O)O)CC2)c3cccc(\C=C\c4ccc5ccc(Cl)cc5n4)c3. Format: Neat. Shipping: Room Temperature. Alfa Chemistry Analytical Products 4
Montelukast racemate United States Pharmacopeia (USP) Reference Standard. Group: Pharmacopeia & metrological institutes standards. Alfa Chemistry Analytical Products
Montelukast sodium Montelukast sodium (MK0476) is a potent, selective and orally active antagonist of cysteinyl leukotriene receptor 1 (CysLT 1 ). Montelukast sodium can be used for the reseach of asthma and liver injury. Montelukast sodium also has an antioxidant effect in intestinal ischemia-reperfusion injury, and could reduce cardiac damage. Montelukast sodium decreases eosinophil infiltration into the asthmatic airways. Montelukast sodium can also be used for COVID-19 research [1] [2] [3] [4]. Uses: Scientific research. Group: Signaling pathways. Alternative Names: MK0476. CAS No. 151767-02-1. Pack Sizes: 10 mM * 1 mL; 50 mg; 100 mg; 500 mg. Product ID: HY-13315. MedChemExpress MCE
Montelukast sodium United States Pharmacopeia (USP) Reference Standard. Group: Pharmacopeia & metrological institutes standardsapi standardseuropean pharmacopoeia (ph. eur.)pharmaceutical toxicologypharmacopoeial standards. Alternative Names: MK 476, 1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic acid monosodium salt, Singulair, Montelukast monosodium salt, Sodium montelukast, [R-(E)]-1-[[[1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic acid monosodium salt,Montelukast Sodium. Alfa Chemistry Analytical Products
Montelukast sodium hydrate ?98% (HPLC). Group: Fluorescence/luminescence spectroscopy. Alfa Chemistry Analytical Products 2
Montelukast sodium salt Montelukast sodium salt. Group: Biochemicals. Alternative Names: 1- [1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] cyclopropaneacetic; MK-476, singulair. Grades: Highly Purified. CAS No. 151767-02-1. Pack Sizes: 100mg, 250mg, 500mg, 1g, 2g. Molecular Formula: C35H35ClNNaO3S. US Biological Life Sciences. USBiological 8
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Montelukast Styrene Montelukast impurity. Group: Biochemicals. Alternative Names: 1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-methylethenyl) phenyl] propyl] thio] methyl] . Grades: Highly Purified. CAS No. 918972-54-0. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
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Montelukast Styrene Montelukast Styrene. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Montekulast Sodium Imp. B (EP), 1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-methylethenyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic Acid,Montelukast Sodium Imp. B (EP), Montelukast Imp. B (EP), Montelukast Styrene. CAS No. 918972-54-0. IUPAC Name: 2-[1-[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-(2-prop-1-en-2-ylphenyl)propyl]sulfanylmethyl]cyclopropyl]acetic acid. Molecular formula: C35H34ClNO2S. Mole weight: 568.17. Catalog: APS918972540. SMILES: CC(=C)c1ccccc1CC[C@@H](SCC2(CC(=O)O)CC2)c3cccc(\C=C\c4ccc5ccc(Cl)cc5n4)c3. Format: Neat. Alfa Chemistry Analytical Products 4
Montelukast sulfone Montelukast sulfone. Group: Biochemicals. Alternative Names: 1- [ [ [1- [3- [2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] sulfonyl] methyl] cyclopropaneacetic acid. Grades: Highly Purified. CAS No. 1266620-74-9. Pack Sizes: 2mg, 5mg, 10mg, 25mg, 50mg. Molecular Formula: C35H36ClNO5S. US Biological Life Sciences. USBiological 8
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Montelukast Sulfone Montelukast Sulfone. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Montelukast Sulfone,1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfonyl]methyl]cyclopropaneacetic Acid. CAS No. 1266620-74-9. IUPAC Name: 2-[1-[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfonylmethyl]cyclopropyl]acetic acid. Molecular formula: C35H36ClNO5S. Mole weight: 618.18. Catalog: APS1266620749. SMILES: CC(C)(O)c1ccccc1CC[C@H](c2cccc(\C=C\c3ccc4ccc(Cl)cc4n3)c2)S(=O)(=O)CC5(CC(=O)O)CC5. Format: Neat. Alfa Chemistry Analytical Products 4
Montelukast Sulfone. Montelukast impurity. Group: Biochemicals. Alternative Names: 1- [ [ [1- [3- [2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] sulfonyl] methyl] cyclopropaneacetic Acid. Grades: Highly Purified. CAS No. 1266620-74-9. Pack Sizes: 5mg. US Biological Life Sciences. USBiological 2
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Montelukast sulfoxide(mixture of diastereomers) Montelukast sulfoxide(mixture of diastereomers). Uses: Designed for use in research and industrial production. Additional or Alternative Names: 1-[[[1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfinyl]methyl]cyclopropaneacetic Acid; Montelukast M2. Product Category: Heterocyclic Organic Compound. Appearance: Light Yellow Solid. CAS No. 909849-96-3. Molecular formula: C35H36ClNO4S. Mole weight: 602.18. Product ID: ACM909849963. Alfa Chemistry — ISO 9001:2015 Certified. Alfa Chemistry. 5
Montelukast Sulfoxide (Mixture of Diastereomers) Montelukast Sulfoxide (Mixture of Diastereomers). Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Montelukast Sulfoxide,1-[[[1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfinyl]methyl]cyclopropaneacetic Acid. CAS No. 909849-96-3. IUPAC Name: 2-[1-[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfinylmethyl]cyclopropyl]acetic acid. Molecular formula: C35H36ClNO4S. Mole weight: 602.18. Catalog: APS909849963. SMILES: CC(C)(O)c1ccccc1CC[C@H](c2cccc(\C=C\c3ccc4ccc(Cl)cc4n3)c2)S(=O)CC5(CC(=O)O)CC5. Format: Neat. Alfa Chemistry Analytical Products 4
Montelukast Sulfoxide. (Mixture of diastereomers) (1- [ [ [1- [3- [2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] sulfinyl] methyl] -cyclopropaneacetic Acid) A metabolite of Montelukast. Group: Biochemicals. Alternative Names: 1- [ [ [1- [3- [2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] sulfinyl] methyl] -cyclopropaneacetic Acid. Grades: Highly Purified. Pack Sizes: 5mg. US Biological Life Sciences. USBiological 1
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21(R)-Hydroxy montelukast 21(R)-Hydroxy montelukast. Uses: Designed for use in research and industrial production. Additional or Alternative Names: [R-[R*,R*-(E)]]-1-[[[1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-hydroxy-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic Aci;21(R)-Hydroxy Montelukast;[R-[R*,R*-(E)]]-1-[[[1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-. Product Category: Heterocyclic Organic Compound. Appearance: Yellow Solid. CAS No. 184763-26-6. Molecular formula: C35H36ClNO4S. Mole weight: 602.191. Product ID: ACM184763266. Alfa Chemistry — ISO 9001:2015 Certified. Alfa Chemistry. 3
21(R)-Hydroxy Montelukast 21(R)-Hydroxy Montelukast is a metabolite of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: [R-[R*,R*-(E)]]-1-[[[1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-hydroxy-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic Acid; Montelukast M5b; {1-[({(1R,3R)-1-{3-[(E)-2-(7-Chloro-2-quinolinyl)vinyl]phenyl}-3-hydroxy-3-[2-(2-hydroxy-2-propanyl)phenyl]propyl}sulfanyl)methyl]cyclopropyl}acetic acid; Cyclopropaneacetic acid, 1-[[[(1R,3R)-1-[3-[(E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-hydroxy-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-. Grade: 95%. CAS No. 184763-26-6. Molecular formula: C35H36ClNO4S. Mole weight: 602.18. BOC Sciences 3
21(R)-Hydroxy Montelukast-d6 A labeled metabolite of Montelukast. Group: Biochemicals. Alternative Names: [R- [R*, R*- (E) ] ] -1- [ [ [1- [3- [2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3-hydroxy-3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] cyclopropaneacetic Acid-d6. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
Worldwide
21(S)-Hydroxy Montelukast 21(S)-Hydroxy Montelukast is a metabolite of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: [R-[R*,S*-(E)]]-1-[[[1-[3-[2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-hydroxy-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic Acid; Montelukast M5a; {1-[({(1R,3S)-1-{3-[(E)-2-(7-Chloro-2-quinolinyl)vinyl]phenyl}-3-hydroxy-3-[2-(2-hydroxy-2-propanyl)phenyl]propyl}sulfanyl)methyl]cyclopropyl}acetic acid; Cyclopropaneacetic acid, 1-[[[(1R,3S)-1-[3-[(E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-hydroxy-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-. Grade: 95%. CAS No. 184763-29-9. Molecular formula: C35H36ClNO4S. Mole weight: 602.18. BOC Sciences 3
21(S)-Hydroxy Montelukast-d6 A labeled metabolite of Montelukast. Group: Biochemicals. Alternative Names: [R- [R*, S*- (E) ] ] -1- [ [ [1- [3- [2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3-hydroxy-3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] cyclopropaneacetic Acid-d6. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
Worldwide
2,2-Dimethoxy-d6 Montelukast 2,2-Dimethoxy Montelukast is an intermediate in the synthesis of Methoxy-d3 Montelukast (M264527), a labeled impurity of Montelukast (M568000), a selective leukotriene D4-receptor antagonist. Used as an antiasthmatic. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 10mg, 100mg. Molecular Formula: C37H34D6ClNO3S, Molecular Weight: 620.27. US Biological Life Sciences. USBiological 10
Worldwide
25-Hydroxy Montelukast 25-Hydroxy Montelukast is a metabolite of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Uses: A metabolite of montelukast. Synonyms: 1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[4-hydroxy-2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic Acid; Montelukast M3; Cyclopropaneacetic acid, 1-[[[(1R)-1-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[4-hydroxy-2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-; {1-[({(1R)-1-{3-[(E)-2-(7-Chloro-2-quinolinyl)vinyl]phenyl}-3-[4-hydroxy-2-(2-hydroxy-2-propanyl)phenyl]propyl}sulfanyl)methyl]cyclopropyl}acetic acid. Grade: ≥95%. CAS No. 200804-28-0. Molecular formula: C35H36ClNO4S. Mole weight: 602.18. BOC Sciences 3
2'-Des(1-hydroxy-1-methylethyl)-2'-carboxy Montelukast Bissodium Salt An impurity of Montelukast Sodium, which is a leukotriene receptor antagonist (LTRA) used for the maintenance treatment of asthma and to relieve symptoms of seasonal allergies. Synonyms: Sodium (R,E)-2-(3-(((1-(Carboxylatomethyl)cyclopropyl)methyl)thio)-3-(3-(2-(7-chloroquinolin-2-yl)vinyl)phenyl)propyl)benzoate; Montelukast Impurity 7; 2-((E)-3-((R,E)-1-(((1-(carboxymethyl)cyclopropyl)methyl)sulfonyl)-3-(2-carboxyphenyl)allyl)styryl)-7-chloroquinoline 1-oxide Sodium. Grade: > 95%. Molecular formula: C33H28ClNNa2O4S. Mole weight: 616.08. BOC Sciences 4
2’-Des(1-hydroxy-1-methylethyl)-2’-carboxy Montelukast Bissodium Salt 2’-Des(1-hydroxy-1-methylethyl)-2’-carboxy Montelukast Bissodium Salt is an impurity of Montelukast Sodium Salt (M568000), a selective leukotriene D4-receptor antagonist. Used as an antiasthmatic. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 50mg, 500mg. Molecular Formula: C33H28ClNNa2O4S, Molecular Weight: 616.08. US Biological Life Sciences. USBiological 10
Worldwide
2'-Des(1-hydroxy-1-methylethyl)-2'-methycarboxy Montelukast Hydrochloride 2'-Des(1-hydroxy-1-methylethyl)-2'-methycarboxy Montelukast Hydrochloride is an impurity of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: 2-[1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-(2-methoxycarbonylphenyl)propyl]thio]methyl]cyclopropyl]acetic Acid Hydrochloride; 2-[(3R)-3-[[[1-(Carboxymethyl)cyclopropyl]methyl]thio]-3-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]propyl]benzoic Acid 1-Methyl Ester Hydrochloride. CAS No. 906107-37-7. Molecular formula: C34H33Cl2NO4S. Mole weight: 622.60. BOC Sciences 4
2’-Des(1-hydroxy-1-methylethyl)-2’-methycarboxy Montelukast Hydrochloride 2’-Des(1-hydroxy-1-methylethyl)-2’-methycarboxy Montelukast Hydrochloride is an impurity of Montelukast (M568000), a selective leukotriene D4-receptor antagonist. Group: Biochemicals. Grades: Highly Purified. CAS No. 906107-37-7. Pack Sizes: 25mg, 100mg. Molecular Formula: C34H33Cl2NO4S. US Biological Life Sciences. USBiological 10
Worldwide
2-Methoxymethyl Montelukast 1,2-Diol (Mixture of Diastereomers) 2-Methoxymethyl Montelukast 1,2-Diol (Mixture of Diastereomers) is an intermediate in the production of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Uses: Intermediate in the production of montelukast metabolites. Synonyms: [1-({[(1R)-1-{3-[(E)-2-(7-Chloro-2-quinolinyl)vinyl]phenyl}-3-{2-[2-hydroxy-1-(methoxymethoxy)-2-propanyl]phenyl}propyl]sulfanyl}methyl)cyclopropyl]acetic acid; Cyclopropaneacetic acid, 1-[[[(1R)-1-[3-[(E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-[1-hydroxy-2-(methoxymethoxy)-1-methylethyl]phenyl]propyl]thio]methyl]-; 1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-[1-hydroxy-2-(methoxymethoxy)-1-methylethyl]phenyl]propyl]thio]methyl]cyclopropaneacetic Acid. Grade: ≥95%. CAS No. 184764-27-0. Molecular formula: C37H40ClNO5S. Mole weight: 646.24. BOC Sciences 4
2-Methoxymethyl Montelukast 1,2-Diol (Mixture of Diastereomers) Intermediate in the production of Montelukast metabolites. Group: Biochemicals. Alternative Names: 1- [ [ [ (1R) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- [1-hydroxy-2- (methoxymethoxy) -1-methylethyl] phenyl] propyl] thio] methyl] cyclopropaneacetic Acid. Grades: Highly Purified. CAS No. 184764-27-0. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
Worldwide
Alpha-Hydroxy Montelukast Alpha-Hydroxy Montelukast. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Montelukast Sodium Imp. I (EP), Cyclopropaneacetic acid, 1-[[[(1R)-1-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-?-hydroxy-. CAS No. 2045402-27-3. IUPAC Name: 2-[1-[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfanylmethyl]cyclopropyl]-2-hydroxyacetic acid. Molecular formula: C35H36ClNO4S. Mole weight: 602.18. Catalog: APS2045402273. SMILES: CC(C)(O)c1ccccc1CC[C@@H](SCC2(CC2)C(O)C(=O)O)c3cccc(\C=C\c4ccc5ccc(Cl)cc5n4)c3. Format: Neat. Alfa Chemistry Analytical Products 4
cis-Montelukast cis-Montelukast. Uses: For analytical and research use. Group: Impurity standards. Pack Sizes: 10MG. Catalog: APS006785. Format: Neat. Shipping: Ice pack (-20°C). Alfa Chemistry Analytical Products 4
cis-Montelukast The cis geometric isomer of Montelukast. An impurity of Montelukast. Group: Biochemicals. Alternative Names: 1- [ [ [ (1R) -1- [3- [ (1Z) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] cyclopropaneacetic Acid. Grades: Highly Purified. CAS No. 774538-96-4. Pack Sizes: 1mg. US Biological Life Sciences. USBiological 2
Worldwide
Des[3-[[(1-Carboxymethyl)cyclopropyl]methyl]thio]-2-propenyl Montelukast Mesylate Des[3-[[(1-Carboxymethyl)cyclopropyl]methyl]thio]-2-propenyl Montelukast Mesylate is an impurity of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: 2-[(2E)-3-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-2-propen-1-yl]-α,α-dimethyl-benzenemethanol Methanesulfonate. CAS No. 1187586-82-8. Molecular formula: C30H30ClNO4S. Mole weight: 536.08. BOC Sciences 7
Dihydro montelukast Dihydro montelukast is a potential impurity found in commercial montelukast preparations. Montelukast sodium salt is a potent and selective cysteinyl leukotriene 1 (CysLT1) receptor antagonist. Synonyms: ZINC58649359; 1-[[[(1R)-1-[3-[2-(7-chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic acid. Grade: ≥98%. CAS No. 142147-67-9. Molecular formula: C35H38ClNO3S. Mole weight: 588.2. BOC Sciences 7
Dihydro Montelukast Sodium Salt A Montelukast impurity. A saturated hydroxyalkylquinoline acid as leukotriene antagonist and biosynthesis inhibitor. Group: Biochemicals. Alternative Names: (R) -1- [ [ [1- [3- [2- (7-Chloro-2-quinolinyl) ethyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] cyclopropaneacetic Acid Monosodium Salt. Grades: Highly Purified. CAS No. 142147-98-6. Pack Sizes: 1mg, 2mg, 5mg. US Biological Life Sciences. USBiological 2
Worldwide
ent-Montelukast Sodium Salt The S-enantiomer of Montelukast. Results indicate that there is no apparent bioinversion of Montelukast to its S-enantiomer in humans. Group: Biochemicals. Alternative Names: 1- [ [ [ (1S) -1- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3- [2- (1-hydroxy-1-methylethyl) phenyl] propyl] thio] methyl] cyclopropaneacetic Acid Sodium Salt; L 768232. Grades: Highly Purified. CAS No. 190078-45-6. Pack Sizes: 10mg. US Biological Life Sciences. USBiological 2
Worldwide
1,1'-[1,1-Cyclopropanediylbis(methyleneoxymethylene)]dibenzene [1-[Bis(Benzyloxy)methyl]cyclopropyl]methanol is an intermediate of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: Benzene, 1,1'-[cyclopropylidenebis(methyleneoxymethylene)]bis-; [1-(phenylmethoxymethyl)cyclopropyl]methoxymethylbenzene. Molecular formula: C19H22O2. Mole weight: 282.38. BOC Sciences 3
1, 1'-[Dithiobis (methylene) ]biscyclopropaneacetic Acid 1, 1'-[Dithiobis (methylene) ]biscyclopropaneacetic Acid is an intermediate in the synthesis of Montelukast (M568000), a selective leukotriene D4-receptor antagonist used as an antiasthmatic agent. Group: Biochemicals. Grades: Highly Purified. CAS No. 162515-67-5. Pack Sizes: 50mg. US Biological Life Sciences. USBiological 3
Worldwide
1,1'-[Dithiobis(methylene)]biscyclopropaneacetic Acid 1,1'-[Dithiobis(methylene)]biscyclopropaneacetic Acid is an intermediate of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: 1-[1-Carboxymethyl-cyclopropylmethyldisulfanylmethyl)cyclopropyl]acetic acid; Montelukast Disulfide Impurity; Cyclopropaneacetic acid, 1,1'-[dithiobis(methylene)]bis-; 2,2'-[Disulfanediylbis(methylene-1,1-cyclopropanediyl)]diacetic acid; 2,2'-((Disulfanediylbis(methylene))bis(cyclopropane-1,1-diyl))diacetic acid. Grade: ≥90%. CAS No. 162515-67-5. Molecular formula: C12H18O4S2. Mole weight: 290.40. BOC Sciences 3
1, 1'-[Dithiobis (methylene) ]biscyclopropaneacetic Acid Methyl Ester 1, 1'-[Dithiobis (methylene) ]biscyclopropaneacetic Acid Methyl Ester is an intermediate in the synthesis of Montelukast (M568000), a selective leukotriene D4-receptor antagonist used as an antiasthmatic agent. Group: Biochemicals. Grades: Highly Purified. CAS No. 1446481-28-2. Pack Sizes: 100mg. US Biological Life Sciences. USBiological 3
Worldwide
1,1'-[Dithiobis(methylene)]biscyclopropaneacetic Acid Methyl Ester 1,1'-[Dithiobis(methylene)]biscyclopropaneacetic Acid Methyl Ester is an intermediate of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: Montelukast Disulfide Dimethyl Ester; Methyl 2-(1-((2-((1-methoxycarbonylmethylcyclopropyl)methyl)disulfanyl) methyl)cyclopropyl)acetate; Cyclopropaneacetic acid, 1,1'-[dithiobis(methylene)]bis-, 1,1'-dimethyl ester; Dimethyl 2,2'-[disulfanediylbis(methylene-1,1-cyclopropanediyl)]diacetate. Grade: ≥90%. CAS No. 1446481-28-2. Molecular formula: C14H22O4S2. Mole weight: 318.45. BOC Sciences 3
1- [ [ [ (1R) -1- [3- [ (2S, R) -2- [ [ (1-Carboxycyclopropyl ) methyl ] thio] -2- (7-chloro-2-quinolinyl) ethyl] phenyl] -3- [2- (1-hydroxy-1- methyl ethyl) phenyl] propyl ] thio] methyl cyclopropaneacetic Acid 1- [ [ [ (1R) -1- [3- [ (2S, R) -2- [ [ (1-Carboxycyclopropyl ) methyl ] thio] -2- (7-chloro-2-quinolinyl) ethyl] phenyl] -3- [2- (1-hydroxy-1- methyl ethyl) phenyl] propyl ] thio] methyl cyclopropaneacetic Acid is derived from Montelukast Methyl Ester (M568080), which is an impurity of the antiasthmatic drug Montelukast (M568000), a selective leukotriene D4-receptor antagonist. Used as an anti-asthmatic. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 500ug, 1mg. Molecular Formula: C41H46ClNO5S2, Molecular Weight: 732.39. US Biological Life Sciences. USBiological 9
Worldwide
1-[[[(1R)-1-[3-[(2S,R)-2-[[(1-Carboxycyclopropyl)methyl]thio]-2-(7-chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methylcyclopropaneacetic Acid 1-[[[(1R)-1-[3-[(2S,R)-2-[[(1-Carboxycyclopropyl)methyl]thio]-2-(7-chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methylcyclopropaneacetic Acid is an impurity of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Molecular formula: C41H46ClNO5S2. Mole weight: 732.39. BOC Sciences 3
1- [2- [ (3S) -3- [3- [ (1E) -2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3-hydroxypropyl] phenyl] acetate Intermediate in the production of Montelukast metabolites. Group: Biochemicals. Alternative Names: [S- (E) ] -1- [2- [3- [3- [2- (7-Chloro-2-quinolinyl) ethenyl] phenyl] -3-hydroxypropyl] phenyl] ethanone. Grades: Highly Purified. CAS No. 184764-13-4. Pack Sizes: 10mg. US Biological Life Sciences. USBiological 2
Worldwide
1,3-Bis[2-(7-chloro-2-quinolyl)vinyl]benzene 1,3-Bis[2-(7-chloro-2-quinolyl)vinyl]benzene is an impurity of Montelukast, which is a leukotriene receptor antagonist indicated for the maintenance treatment of asthma and to relieve symptoms of seasonal allergies. Synonyms: 1,3-Bis[(E)-2-(7-chloroquinoline-2-yl)vinyl]benzene; 2,2'-{1,3-Phenylenedi[(E)ethene-2,1-diyl]}bis(7-chloroquinoline); (E, E) -2, 2'- (1, 3-Pphenylenedi- 2, 1- ethenediyl) bis[7- chloro-quinoline]; Montelukast Impurity 18. Grade: ≥95%. CAS No. 120578-04-3. Molecular formula: C28H18Cl2N2. Mole weight: 453.36. BOC Sciences 3
1- ( (Benzyloxy) methyl ) cyclopropane carbaldehyde 1- ( (Benzyloxy) methyl ) cyclopropane carbaldehyde is an protected intermediate used in the synthesis of Montelukast (M568000), a selective leukotriene D4-receptor antagonist used as an antiasthmatic agent. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 250mg. US Biological Life Sciences. USBiological 3
Worldwide
1-((Benzyloxy)methyl)cyclopropanecarbaldehyde 1-((Benzyloxy)methyl)cyclopropanecarbaldehyde is an intermediate of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: Cyclopropanecarboxaldehyde, 1-[(phenylmethoxy)methyl]-; 1-((Benzyloxy)methyl)cyclopropane-1-carbaldehyde. CAS No. 288401-39-8. Molecular formula: C12H14O2. Mole weight: 190.24. BOC Sciences 3
{1-[(Benzyloxy)methyl]cyclopropyl}(hydroxy)acetamide {1-[(Benzyloxy)methyl]cyclopropyl}(hydroxy)acetamide is a protected intermediate of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: Cyclopropaneacetamide, α-hydroxy-1-[(phenylmethoxy)methyl]-; 2-hydroxy-2-[1-(phenylmethoxymethyl)cyclopropyl]acetamide; 2-Hydroxy-2-(1-(hydroxymethyl)cyclopropyl)acetamide Benzyl Ester. Molecular formula: C13H17NO3. Mole weight: 235.28. BOC Sciences 3
{1-[(Benzyloxy)methyl]cyclopropyl}(hydroxy)acetic acid {1-[(Benzyloxy)methyl]cyclopropyl}(hydroxy)acetic acid is an intermediate of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: Cyclopropaneacetic acid, α-hydroxy-1-[(phenylmethoxy)methyl]-; 2-hydroxy-2-[1-(phenylmethoxymethyl)cyclopropyl]acetic acid; 2-Hydroxy-2-(1-(hydroxymethyl)cyclopropyl)acetic Acid Benzyl Ester. Molecular formula: C13H16O4. Mole weight: 236.26. BOC Sciences 3
{1-[(Benzyloxy)methyl]cyclopropyl}(hydroxy)acetonitrile {1-[(Benzyloxy)methyl]cyclopropyl}(hydroxy)acetonitrile is an intermediate of Montelukast, which is a leukotriene D4-receptor antagonist used in the treatment of allergies and asthma. Synonyms: 2-hydroxy-2-[1-(phenylmethoxymethyl)cyclopropyl]acetonitrile; 2-Hydroxy-2-(1-(hydroxymethyl)cyclopropyl)acetonitrile Benzyl Ester; Cyclopropaneacetonitrile, α-hydroxy-1-[(phenylmethoxy)methyl]-. Molecular formula: C13H15NO2. Mole weight: 217.26. BOC Sciences 3

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