2-(2-Bromo-4-hydroxy-5-methoxyphenyl)acetic acid CAS 181517-98-6

Description

The occurrence of 2-(2-Bromo-4-hydroxy-5-methoxyphenyl)acetic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

2-(2-Bromo-4-hydroxy-5-methoxyphenyl)acetic acid (CAS 181517-98-6) is a high-purity analytical reference standard with the molecular formula C9H9BrO4 and a molecular weight of 261.07 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 2-(2-Bromo-4-hydroxy-5-methoxyphenyl)acetic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 261.07 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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