2-Methylbut-2-enoyl chloride CAS 49651-33-4

Purity 97%+In StockPharmaceutical Standards
CAS No.49651-33-4
Molecular FormulaC5H7ClO
Molecular Weight118.56 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Methylbut-2-enoyl chloride CAS 49651-33-4 chemical structure

Description

Based on its molecular formula C5H7ClO, 2-Methylbut-2-enoyl chloride contains a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 118.56 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

2-Methylbut-2-enoyl chloride (CAS 49651-33-4) is a high-purity analytical reference standard with the molecular formula C5H7ClO and a molecular weight of 118.56 g/mol.

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 FormulaC5H7ClO
Molecular Weight118.56 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1971
Halogen ContentCl-containing

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