4,4'-Bis(4-amino-1-naphthylazo)-2,2'-stilbenedisulfonic Acid CAS 5463-64-9

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.

4,4'-Bis(4-amino-1-naphthylazo)-2,2'-stilbenedisulfonic Acid (CAS 5463-64-9), molecular formula C34H26N6O6S2 and molecular weight 678.74 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 4,4'-Bis(4-amino-1-naphthylazo)-2,2'-stilbenedisulfonic Acid (C34H26N6O6S2) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

As a certified reference material (CRM), 4,4'-Bis(4-amino-1-naphthylazo)-2,2'-stilbenedisulfonic 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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com