Methyl 2-(chlorosulfonyl)cyclopent-1-ene-1-carboxylate CAS 87631-72-9

Purity 97%+In StockPharmaceutical Standards
CAS No.87631-72-9
Molecular FormulaC7H9ClO4S
Molecular Weight224.66 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl 2-(chlorosulfonyl)cyclopent-1-ene-1-carboxylate CAS 87631-72-9 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Methyl 2-(chlorosulfonyl)cyclopent-1-ene-1-carboxylate.

Methyl 2-(chlorosulfonyl)cyclopent-1-ene-1-carboxylate (CAS 87631-72-9) is a high-purity analytical reference standard with the molecular formula C7H9ClO4S and a molecular weight of 224.66 g/mol.

Methyl 2-(chlorosulfonyl)cyclopent-1-ene-1-carboxylate (C7H9ClO4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 FormulaC7H9ClO4S
Molecular Weight224.66 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1982
Halogen ContentCl-containing
Sulfur Atoms1

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