(Z)-3-bromo-4-methoxy-4-oxobut-2-enoic acid CAS 122457-36-7

Description

Compared with other compounds in its class, the molecular weight of 208.99 g/mol gives (Z)-3-bromo-4-methoxy-4-oxobut-2-enoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(Z)-3-bromo-4-methoxy-4-oxobut-2-enoic acid (CAS 122457-36-7), molecular formula C5H5BrO4 and molecular weight 208.99 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carbohydrate-derived structure, bromine substitution, (Z)-3-bromo-4-methoxy-4-oxobut-2-enoic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 208.99 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), (Z)-3-bromo-4-methoxy-4-oxobut-2-enoic 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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