S-(2-Carboxyethyl)-L-cysteine CAS 4033-46-9

Description

Compared with other compounds in its class, the molecular weight of 193.22 g/mol gives S-(2-Carboxyethyl)-L-cysteine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

S-(2-Carboxyethyl)-L-cysteine (CAS 4033-46-9) is a high-purity analytical reference standard with the molecular formula C6H11NO4S and a molecular weight of 193.22 g/mol.

Based on its molecular formula C6H11NO4S, S-(2-Carboxyethyl)-L-cysteine 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 193.22 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.

As a certified reference material (CRM), S-(2-Carboxyethyl)-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.

Physical & Chemical Properties

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com