Acetylcysteine Impurity 32 CAS 462-10-2

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.462-10-2
Molecular FormulaC8H16N2O4S2
Molecular Weight268.35 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Acetylcysteine Impurity 32 CAS 462-10-2 chemical structure

Description

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

Acetylcysteine Impurity 32 (CAS 462-10-2) is a certified pharmaceutical impurity reference standard with the molecular formula C8H16N2O4S2 and a molecular weight of 268.35 g/mol.

Based on its molecular formula C8H16N2O4S2, Acetylcysteine Impurity 32 contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 268.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC8H16N2O4S2
Molecular Weight268.35 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1957
Nitrogen Atoms2
Sulfur Atoms2

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