8-Hydroxy-5,7-dinitronaphthalene-2-sulfonic acid hydrate CAS 65944-47-0
| CAS No. | 65944-47-0 |
| Molecular Formula | C10H6N2O8S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
8-Hydroxy-5,7-dinitronaphthalene-2-sulfonic acid hydrate (CAS 65944-47-0), molecular formula C10H6N2O8SH2O and molecular weight 332.24 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 8-Hydroxy-5,7-dinitronaphthalene-2-sulfonic acid hydrate (C10H6N2O8SH2O) is characterized by a carbohydrate-derived structure, an amide group, a sulfone group. 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).
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), 8-Hydroxy-5,7-dinitronaphthalene-2-sulfonic acid hydrate 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 | C10H6N2O8S H2O |
| Molecular Weight | 332.24 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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- (3S,4S)-tert-butyl 3-(benzyl(benzyloxycarbonyl)amino)-4-ethoxypyrrolidine-1-carboxylate (CAS 708273-39-6)
- 1,4-Cyclohexanedione (CAS 637-88-7)
- Semaglutide Impurity 162 (x TFA Salt) (CAS CATO-C4X-2226162)
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