2-bromocyclopentan-1-one CAS 21943-50-0

Purity 97%+In StockPharmaceutical Standards
CAS No.21943-50-0
Molecular FormulaC5H7BrO
Molecular Weight163.01 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-bromocyclopentan-1-one CAS 21943-50-0 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-bromocyclopentan-1-one (CAS 21943-50-0), molecular formula C5H7BrO and molecular weight 163.01 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a hydroxyl group, an ether linkage, bromine substitution, 2-bromocyclopentan-1-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 163.01 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.

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 FormulaC5H7BrO
Molecular Weight163.01 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.)1963
Halogen ContentBr-containing

Related bromocyclopentan Standards

Recommended Standards

Why CATO?