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Respiratory & Antiallergic APIs

Montelukast

IP/BP/USPAvailable on request

Order Montelukast (CAS 158966-92-8) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 1 kg.

Pack sizes
Montelukast chemical structure
CAS number158966-92-8
FormulaC35H36ClNO3S
Molar mass586.2 g/mol
Physical formPowder
HS code2933
Purity≥99.0%
InChIKeyUCHDWCPVSPXUMX-TZIWLTJVSA-N
IUPAC name2-[1-[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfanylmethyl]cyclopropyl]acetic acid

About Montelukast

Researchers and plant chemists source Montelukast from Zemixal for routine and specialised work. Key data (IP/BP/USP): CAS 158966-92-8, formula C35H36ClNO3S and molar mass 586.2 g/mol. It is described as white or off-white powder.

Use cases we see most often

  • Pharmaceutical formulation
  • Generic drug development

Safe handling

Hazard communication follows GHS (Warning: H302, H312 and H332). Our SDS lists exposure controls and first-aid measures.

Available as 1 kg, 5 kg and 25 kg. Larger or split packs can be arranged. Each lot travels with a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Montelukast

See every impurity, metabolite and related compound we list for this API.

Montelukast standards

Typical uses

  • Pharmaceutical formulation
  • Generic drug development

Applications

Pharmaceutical Manufacturing and QC

Grade guides

IP Grade (Indian Pharmacopoeia)BP Grade (British Pharmacopoeia)USP Grade (United States Pharmacopeia)

Specifications and identifiers

Specifications of Montelukast
Product nameMontelukast
Catalogue numberZX-004178
CAS number158966-92-8
IUPAC name2-[1-[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfanylmethyl]cyclopropyl]acetic acid
Molecular formulaC35H36ClNO3S
Molar mass586.2 g/mol
Exact mass585.2104
GradeIP/BP/USP
Purity / assay≥99.0%
Physical formPowder
AppearanceWhite or off-white powder
XLogP37.7
H-bond donors / acceptors2 / 5
Topological polar surface area95.7 Ų
HS code2933
InChIKeyUCHDWCPVSPXUMX-TZIWLTJVSA-N
SMILESCC(C)(C1=CC=CC=C1CC[C@H](C2=CC=CC(=C2)/C=C/C3=NC4=C(C=CC(=C4)Cl)C=C3)SCC5(CC5)CC(=O)O)O
PubChem CID5281040
Synonymscis-Montelukast, Montelukast (INN), Montelukast racemate, C35H36ClNO3S, Brondilat (TN), MK0476 (free acid), ?-Hydroxy montelukast, Montelukast (Standard), Montelukast - Bio-X trade mark

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H302Harmful if swallowed
  • H312Harmful in contact with skin
  • H332Harmful if inhaled

Precautionary statements P261, P264, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P317, P321, P330, P362 + P364, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Montelukast
1 kgQuoted on request
5 kgQuoted on request
25 kgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Montelukast

Which CAS number identifies Montelukast?
Montelukast is registered under CAS 158966-92-8. You may also see it listed as cis-Montelukast, Montelukast (INN), Montelukast racemate. Our catalogue number for this item is ZX-004178.
What are the formula and molar mass of Montelukast?
For Montelukast, its formula is C35H36ClNO3S and its molar mass is 586.2 g/mol. The systematic (IUPAC) name is 2-[1-[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfanylmethyl]cyclopropyl]acetic acid. InChIKey UCHDWCPVSPXUMX-TZIWLTJVSA-N lets you match it in any structure database.
How is Montelukast used in pharmaceutical QC?
Montelukast is a characterised reference material linked to Montelukast. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Montelukast?
This listing is IP/BP/USP grade with ≥99.0% purity. Standard packs are 1 kg, 5 kg, 25 kg. Larger quantities and custom packing can be quoted on request.
Which documents come with Montelukast?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Montelukast to my country?
Yes. Because Montelukast is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

Other grades with CAS 158966-92-8

More Montelukast standards

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