L-Cysteinesulfinic acid monohydrate CAS 207121-48-0

Purity >95%In StockPharmaceutical Standards
CAS No.207121-48-0
Molecular FormulaC3H7NO4S
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

L-Cysteinesulfinic acid monohydrate CAS 207121-48-0 chemical structure

Description

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.

CATO supplies L-Cysteinesulfinic acid monohydrate (CAS 207121-48-0), a certified reference material (molecular formula C3H7NO4SH2O, MW 171.17 g/mol) for analytical method development and quality control.

L-Cysteinesulfinic acid monohydrate (C3H7NO4SH2O) contains an amide group, a sulfone group, a carboxylic acid group, an ether linkage. It is notably hygroscopic, 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.

CATO manufactures L-Cysteinesulfinic acid monohydrate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC3H7NO4S H2O
Molecular Weight171.17 g/mol
Purity>95%
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)0.0
CAS Registry Year (est.)2016
Nitrogen Atoms1
Sulfur Atoms1

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