Montelukast Impurity 34 CAS 162515-68-6

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.162515-68-6
Molecular FormulaC6H10O2S
Molecular Weight146.21 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Montelukast Impurity 34 CAS 162515-68-6 chemical structure

Description

The occurrence of Montelukast Impurity 34 is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

As a process- or degradation-related impurity, Montelukast Impurity 34 (CAS 162515-68-6, C6H10O2S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, Montelukast Impurity 34 is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 146.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

As a certified reference material (CRM), Montelukast Impurity 34 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC6H10O2S
Molecular Weight146.21 g/mol
Purity>95%
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)2003
Sulfur Atoms1

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