2-Aminoethanethioic S-acid CAS 758-10-1

Purity 97%+In StockPharmaceutical Standards
CAS No.758-10-1
Molecular FormulaC2H5NOS
Molecular Weight91.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Aminoethanethioic S-acid CAS 758-10-1 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.

2-Aminoethanethioic S-acid (CAS 758-10-1) is a high-purity analytical reference standard with the molecular formula C2H5NOS and a molecular weight of 91.13 g/mol.

The molecular framework of 2-Aminoethanethioic S-acid (C2H5NOS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC2H5NOS
Molecular Weight91.13 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1957
Nitrogen Atoms1
Sulfur Atoms1

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