2-Amino-5-((4-sulfophenyl)diazenyl)benzenesulfonic acid CAS 101-50-8

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.

CATO supplies 2-Amino-5-((4-sulfophenyl)diazenyl)benzenesulfonic acid (CAS 101-50-8), a certified reference material (molecular formula C12H11N3O6S2, MW 357.36 g/mol) for analytical method development and quality control.

The molecular framework of 2-Amino-5-((4-sulfophenyl)diazenyl)benzenesulfonic acid (C12H11N3O6S2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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