4-Mercapto-2-oxobutanoic acid CAS 4273-28-3

Purity 97%+In StockPharmaceutical Standards
CAS No.4273-28-3
Molecular FormulaC4H6O3S
Molecular Weight134.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Mercapto-2-oxobutanoic acid CAS 4273-28-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 134.15 g/mol gives 4-Mercapto-2-oxobutanoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-Mercapto-2-oxobutanoic acid (CAS 4273-28-3) is a high-purity analytical reference standard with the molecular formula C4H6O3S and a molecular weight of 134.15 g/mol.

The molecular framework of 4-Mercapto-2-oxobutanoic acid (C4H6O3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.

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), 4-Mercapto-2-oxobutanoic acid 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

Molecular FormulaC4H6O3S
Molecular Weight134.15 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1958
Sulfur Atoms1

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