2-Hydroxynaphthalene-1-sulfonic acid CAS 567-47-5

Description

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.

2-Hydroxynaphthalene-1-sulfonic acid (CAS 567-47-5) is a high-purity analytical reference standard with the molecular formula C10H8O4S and a molecular weight of 224.23 g/mol.

Based on its molecular formula C10H8O4S, 2-Hydroxynaphthalene-1-sulfonic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 224.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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