5,7-Dihydroxy-8-methyl-2-phenyl-4H-chromen-4-one CAS 55969-56-7

Description

Compared with other compounds in its class, the molecular weight of 268.26 g/mol gives 5,7-Dihydroxy-8-methyl-2-phenyl-4H-chromen-4-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5,7-Dihydroxy-8-methyl-2-phenyl-4H-chromen-4-one (CAS 55969-56-7) is a high-purity analytical reference standard with the molecular formula C16H12O4 and a molecular weight of 268.26 g/mol.

Structurally, 5,7-Dihydroxy-8-methyl-2-phenyl-4H-chromen-4-one (C16H12O4) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 268.26 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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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