2-Mercaptobutyric acid CAS 26473-48-3

Purity 97%+In StockPharmaceutical Standards
CAS No.26473-48-3
Molecular FormulaC4H8O2S
Molecular Weight120.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Mercaptobutyric acid CAS 26473-48-3 chemical structure

Description

2-Mercaptobutyric acid (CAS 26473-48-3) is a high-purity analytical reference standard with the molecular formula C4H8O2S and a molecular weight of 120.17 g/mol.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 2-Mercaptobutyric acid is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 120.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques.

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.

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 FormulaC4H8O2S
Molecular Weight120.17 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1964
Sulfur Atoms1

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