4-Bromo-5-fluoro-2-methylbenzenethiol CAS 1208077-77-3

Description

Compared with other compounds in its class, the molecular weight of 221.09 g/mol gives 4-Bromo-5-fluoro-2-methylbenzenethiol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-Bromo-5-fluoro-2-methylbenzenethiol (CAS 1208077-77-3) is a high-purity analytical reference standard with the molecular formula C7H6BrFS and a molecular weight of 221.09 g/mol.

Owing to sulfur-containing functionality, fluorine/bromine substitution, an aromatic ring system, 4-Bromo-5-fluoro-2-methylbenzenethiol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 221.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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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