4-Hydroxybenzoic acid-methyl ester sodium CAS 5026-62-0

Description

Compared with other compounds in its class, the molecular weight of 174.13 g/mol gives 4-Hydroxybenzoic acid-methyl ester sodium distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-Hydroxybenzoic acid-methyl ester sodium (CAS 5026-62-0), molecular formula C8H7O3Na and molecular weight 174.13 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 4-Hydroxybenzoic acid-methyl ester sodium is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 174.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

As a certified reference material (CRM), 4-Hydroxybenzoic acid-methyl ester sodium meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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