2-(4-Ethoxyphenyl)-4-oxo-4H-chromen-3-yl 4-bromobenzene-1-sulfonate CAS 298217-83-1

Description

Compared with other compounds in its class, the molecular weight of 501.35 g/mol gives 2-(4-Ethoxyphenyl)-4-oxo-4H-chromen-3-yl 4-bromobenzene-1-sulfonate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-(4-Ethoxyphenyl)-4-oxo-4H-chromen-3-yl 4-bromobenzene-1-sulfonate (CAS 298217-83-1), molecular formula C23H17BrO6S and molecular weight 501.35 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 2-(4-Ethoxyphenyl)-4-oxo-4H-chromen-3-yl 4-bromobenzene-1-sulfonate (C23H17BrO6S) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 501.35 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

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