Sodium 6-hydroxynaphthalene-2-Sulfonate CAS 135-76-2
| CAS No. | 135-76-2 |
| Molecular Formula | C10H7O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Sodium 6-hydroxynaphthalene-2-Sulfonate (CAS 135-76-2) is a high-purity analytical reference standard with the molecular formula C10H7O4SNa and a molecular weight of 246.21 g/mol.
Structurally, Sodium 6-hydroxynaphthalene-2-Sulfonate (C10H7O4SNa) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.5, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 246.21 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Sodium 6-hydroxynaphthalene-2-Sulfonate 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
| Molecular Formula | C10H7O4S Na |
| Molecular Weight | 246.21 g/mol |
| Purity | >95% |
| 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) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Sodium Standards
- 1-Hydroxynaphthalene-2-sulfonyl chloride (CAS 102879-07-2)
- 1-(1-Hydroxynaphthalene-2-carbonyl)pyrrolidine-2-carboxylic acid (CAS 1103247-90-0)
- 8-Hydroxynaphthalene-1-sulfonic acid (CAS 117-22-6)
- 8-Hydroxynaphthalene-1,6-disulfonic acid (CAS 117-43-1)
- 5-Hydroxynaphthalene-1-Sulfonic Acid (CAS 117-59-9)
- 7-Hydroxynaphthalene-1-sulfonic acid (CAS 132-57-0)
- 7-Hydroxynaphthalene-1,3-disulfonic acid xpotassium salt (CAS 13846-08-7)
- Sodium 4-Hydroxynaphthalene-2-sulfonate (CAS 13935-00-7)
Recommended Standards
- 2-(Cyclopentylmethyl)morpholine (CAS 927801-22-7)
- 2,9-Dibromo-1,10-phenanthroline-5,6-dione (CAS 943861-95-8)
- Methyl 3-(2-hydroxy-4-methoxyphenyl)-3-oxopropanoate (CAS 132017-98-2)
- 4-(Trifluoromethyl)-N2,N6-bis[3-(trifluoromethyl)phenyl]pyridine-2,6-dicarboxamide (CAS 1092344-72-3)
- Tetrahydrobisdemethoxycurcumin (CAS 113482-94-3)
- n-(5-Bromo-2-fluorophenyl)methanesulfonamide (CAS 710348-24-6)
- Urobilin Hydrochloride (CAS 28925-89-5)
- 2-Amino-6-(tert-butyl)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide (CAS 68746-25-8)
- 6-bromo-2-chloro-3-nitro-quinoline (CAS 754990-23-3)
- Palmitoyl hexapeptide-6 (CAS 891498-01-4)
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