2-Propyne-1-sulfonyl Chloride CAS 32623-88-4

Purity 97%+In StockPharmaceutical Standards
CAS No.32623-88-4
Molecular FormulaC3H3ClO2S
Molecular Weight138.57 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Propyne-1-sulfonyl Chloride CAS 32623-88-4 chemical structure

Description

CATO supplies 2-Propyne-1-sulfonyl Chloride (CAS 32623-88-4), a certified reference material (molecular formula C3H3ClO2S, MW 138.57 g/mol) for analytical method development and quality control.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 2-Propyne-1-sulfonyl Chloride is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 138.57 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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 FormulaC3H3ClO2S
Molecular Weight138.57 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityContains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1966
Halogen ContentCl-containing
Sulfur Atoms1

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