Brivaracetam Impurity 89 CAS CATO-C4X-200789

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-200789
Molecular FormulaC18H32Br2N2O3
Molecular Weight484.27 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Brivaracetam Impurity 89 CAS CATO-C4X-200789 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 484.27 g/mol gives Brivaracetam Impurity 89 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Brivaracetam Impurity 89 (CAS CATO-C4X-200789), a pharmacopoeial impurity reference standard (molecular formula C18H32Br2N2O3, MW 484.27 g/mol) used for the identification and quantification of trace impurities in APIs.

Brivaracetam Impurity 89 (C18H32Br2N2O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC18H32Br2N2O3
Molecular Weight484.27 g/mol
AppearanceWhite to pale yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
Halogen ContentBr-containing
Nitrogen Atoms2

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