2-Chloro-ε-caprolactone CAS 89727-99-1

Purity 97%+In StockPharmaceutical Standards
CAS No.89727-99-1
Molecular FormulaC6H9ClO2
Molecular Weight148.59 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Chloro-ε-caprolactone CAS 89727-99-1 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-Chloro-ε-caprolactone (CAS 89727-99-1), molecular formula C6H9ClO2 and molecular weight 148.59 g/mol, is a CATO reference standard with documented purity and traceability.

2-Chloro-ε-caprolactone (C6H9ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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.

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 FormulaC6H9ClO2
Molecular Weight148.59 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.)1982
Halogen ContentCl-containing

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Why CATO?