4-methoxy-3-(trifluoromethyl)benzoyl chloride CAS 98187-18-9

Description

Compared with other compounds in its class, the molecular weight of 244.64 g/mol gives 4-methoxy-3-(trifluoromethyl)benzoyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-methoxy-3-(trifluoromethyl)benzoyl chloride (CAS 98187-18-9) is a high-purity analytical reference standard with the molecular formula C9H12ClF3O2 and a molecular weight of 244.64 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, 4-methoxy-3-(trifluoromethyl)benzoyl chloride is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 244.64 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.

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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