8-Amino-4-hydroxynaphthalene-2-sulfonic acid CAS 489-78-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 489-78-1 |
| Molecular Formula | C10H9NO4S |
| Molecular Weight | 239.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
8-Amino-4-hydroxynaphthalene-2-sulfonic acid (CAS 489-78-1) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C10H9NO4S. Molecular weight: 239.25 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C10H9NO4S |
| Molecular Weight | 239.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 2-Ethyl-4-methoxy-3-methylbenzoic acid (CAS 1181770-76-2)
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- 5-(Benzyloxy)-6-bromo-1H-indazole (CAS 1206800-86-3)
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- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
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 13829788188 / jacky.chen@cato-chem.com