184763-26-6

Basic information

• Product Name: 21(R)-Hydroxy Montelukast
• 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 Aci;21(R)-Hydroxy Montelukast;[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
• CAS NO: 184763-26-6
• Molecular Formula: C35H36ClNO4S
• Molecular Weight: 602.191
• Product Categories: Chiral Reagents, Metabolites & Impurities, Pharmaceuticals, Intermediates & Fine Chemicals, Sulfur & Selenium Compounds;Various Metabolites and Impurities;Intermediates & Fine Chemicals;Metabolites & Impurities;Pharmaceuticals;Chiral Reagents;Sulfur & Selenium Compounds
• Mol File: 184763-26-6.mol
• Article Data: 1

Chemical Properties

• Melting Point: 76-81°C
• Boiling Point: 787.834°C at 760 mmHg
• Flash Point: 430.267°C
• Appearance: /
• Density: 1.312g/cm³
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.689
• Storage Temp.: Amber Vial, -20°C Freezer, Under Inert Atmosphere
• Solubility: Acetone (Slightly), Chloroform (Slightly), Methanol (Slightly)
• CAS DataBase Reference: 21(R)-Hydroxy Montelukast(CAS DataBase Reference)
• NIST Chemistry Reference: 21(R)-Hydroxy Montelukast(184763-26-6)
• EPA Substance Registry System: 21(R)-Hydroxy Montelukast(184763-26-6)

Safety Data

• Hazardous Substances Data: 184763-26-6(Hazardous Substances Data)

Usage

Chemical Properties

Yellow Solid

Uses

A metabolite of Montelukast (M568000).

InChI:InChI=1/C35H36ClNO4S/c1-34(2,41)29-9-4-3-8-28(29)31(38)20-32(42-22-35(16-17-35)21-33(39)40)25-7-5-6-23(18-25)10-14-27-15-12-24-11-13-26(36)19-30(24)37-27/h3-15,18-19,31-32,38,41H,16-17,20-22H2,1-2H3,(H,39,40)/b14-10+/t31-,32+/m0/s1

Upstream product

• 676-58-4 methylmagnesium chloride 

Relevant articles and documents

Synthesis of Montelukast (MK-0476) metabolic oxidation products

We report the chemical synthesis of six oxidized derivatives of MK-0476 (Montelukast, L-706631), which have been key tools in the identification of its metabolites. We have prepared three diastereoisomeric pairs of potential oxidative metabolites of MK-0476, starting from the (S)-hydroxy ester 7 in 10 and five steps, and starting from MK-0476 itself in one step. The key benzylic hydroxyl of 1 and 2 was introduced by a bromination and saponification reaction sequence. In the case of the hydroxyl of 3 and 4, the key step was the addition of a hydroxymethyl carbanion equivalent on ketone 20. The two sulfoxide 5 and 6 were prepared by a direct oxidation of MK-0476 with m-chloroperbenzoic acid.