3-(1,5-Dihydroxy-2-naphthylazo)-4-hydroxybenzenesulfonic acid sodium salt CAS 1007497-97-3
| CAS No. | 1007497-97-3 |
| Molecular Formula | C16H12N2O5S |
| 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.
3-(1,5-Dihydroxy-2-naphthylazo)-4-hydroxybenzenesulfonic acid sodium salt (CAS 1007497-97-3), molecular formula C16H12N2O5SNa and molecular weight 367.33 g/mol, is a CATO reference standard with documented purity and traceability.
3-(1,5-Dihydroxy-2-naphthylazo)-4-hydroxybenzenesulfonic acid sodium salt (C16H12N2O5SNa) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 3-(1,5-Dihydroxy-2-naphthylazo)-4-hydroxybenzenesulfonic acid sodium salt under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H12N2O5S Na |
| Molecular Weight | 367.33 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dihydroxy Standards
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Recommended Standards
- 6-methyl-5-(trifluoromethyl)picolinonitrile (CAS 1448776-81-5)
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- 6-Boc-1,6-diazaspiro[3.3]heptane (CAS 1272412-72-2)
- 2-(1h-Imidazol-1-yl)pyridine-4-carbothioamide (CAS 1016819-67-2)
- Fluocinolone Acetonide Impurity 23 (CAS CATO-C4X-238123)
- (R)-Methyl 3-amino-2-fluoropropanoate hydrochloride (CAS 98897-91-7)
- 2-(4-Hydroxypiperidin-4-yl)acetic acid (CAS 328401-29-2)
- 5,5-Dimethyl-2-nitromethyl-1,3-dioxane (CAS 33884-29-6)
- 5-Methyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (CAS 77712-95-9)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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