3-Methyl-2-oxobutanoyl chloride CAS 55109-47-2

Purity 97%+In StockPharmaceutical Standards
CAS No.55109-47-2
Molecular FormulaC5H7ClO2
Molecular Weight134.56 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Methyl-2-oxobutanoyl chloride CAS 55109-47-2 chemical structure

Description

CATO supplies 3-Methyl-2-oxobutanoyl chloride (CAS 55109-47-2), a certified reference material (molecular formula C5H7ClO2, MW 134.56 g/mol) for analytical method development and quality control.

The molecular framework of 3-Methyl-2-oxobutanoyl chloride (C5H7ClO2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.

As a certified reference material (CRM), 3-Methyl-2-oxobutanoyl chloride meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC5H7ClO2
Molecular Weight134.56 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.)1972
Halogen ContentCl-containing

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