S-Carboxymethyl-L-cysteine CAS 2387-59-9

Purity 97%+In StockPharmaceutical Standards
CAS No.2387-59-9
Molecular FormulaC5H9NO4S
Molecular Weight179.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

S-Carboxymethyl-L-cysteine CAS 2387-59-9 chemical structure

Description

As a certified reference material (CRM), S-Carboxymethyl-L-cysteine 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.

S-Carboxymethyl-L-cysteine (CAS 2387-59-9) is a high-purity analytical reference standard with the molecular formula C5H9NO4S and a molecular weight of 179.19 g/mol.

Based on its molecular formula C5H9NO4S, S-Carboxymethyl-L-cysteine contains a carbohydrate-derived structure, an amide group, a sulfone group; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 179.19 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.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

Physical & Chemical Properties

Molecular FormulaC5H9NO4S
Molecular Weight179.19 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1957
Nitrogen Atoms1
Sulfur Atoms1

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