5-Amino-2-(phenylamino)benzenesulfonic acid CAS 91-30-5

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Amino-2-(phenylamino)benzenesulfonic acid.

5-Amino-2-(phenylamino)benzenesulfonic acid (CAS 91-30-5) is a high-purity analytical reference standard with the molecular formula C12H12N2O3S and a molecular weight of 264.30 g/mol.

Based on its molecular formula C12H12N2O3S, 5-Amino-2-(phenylamino)benzenesulfonic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 264.30 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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), 5-Amino-2-(phenylamino)benzenesulfonic acid 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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