2-Diazo-1-naphthol-5-sulfonic Acid Sodium Salt CAS 2657-00-3
| CAS No. | 2657-00-3 |
| Molecular Formula | - |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
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-Diazo-1-naphthol-5-sulfonic Acid Sodium Salt (CAS 2657-00-3), a certified reference material (molecular formula N/A, MW N/A g/mol) for analytical method development and quality control.
2-Diazo-1-naphthol-5-sulfonic Acid Sodium Salt is supplied as a fully characterized reference material; its structural identity, assigned purity, and stability data are documented in the batch-specific Certificate of Analysis (COA).
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
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Freely soluble in water |
| Stability | Stable under recommended storage conditions |
| CAS Registry Year (est.) | 1957 |
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Recommended Standards
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- 5-amino-N,N-dimethyl-1H-pyrazole-4-carboxamide (CAS 741209-40-5)
- Crisaborole Impurity 39 (CAS 2227126-13-6)
- 1-Cyclobutyl-2-methyl-1h-benzo[d]imidazole-4-carboxylic acid (CAS 1550440-58-8)
- [Formaldehyde Schiff-base]-Semaglutide Impurity 136 X TFA Salt (CAS CATO-C4X-2226136)
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