5-bromo-4-oxo-4H-pyran-2-carboxylic acid CAS 67897-52-3

Description

Compared with other compounds in its class, the molecular weight of 218.99 g/mol gives 5-bromo-4-oxo-4H-pyran-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-bromo-4-oxo-4H-pyran-2-carboxylic acid (CAS 67897-52-3) is a high-purity analytical reference standard with the molecular formula C6H3BrO4 and a molecular weight of 218.99 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 5-bromo-4-oxo-4H-pyran-2-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 218.99 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.

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), 5-bromo-4-oxo-4H-pyran-2-carboxylic acid 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

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