4-Bromo-3-(3,4-dimethylphenyl)-2-fluoropropiophenone CAS 898779-67-4

Description

The occurrence of 4-Bromo-3-(3,4-dimethylphenyl)-2-fluoropropiophenone is closely related to a steroid core, a hydroxyl group, an ether linkage, fluorine/bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

4-Bromo-3-(3,4-dimethylphenyl)-2-fluoropropiophenone (CAS 898779-67-4), molecular formula C17H16BrFO and molecular weight 335.21 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 4-Bromo-3-(3,4-dimethylphenyl)-2-fluoropropiophenone (C17H16BrFO) contains a steroid core, a hydroxyl group, an ether linkage, fluorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 335.21 g/mol, it falls into the moderately-high-molecular-weight range. 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.

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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