20261-31-8 4-Hydroxy-3-(hydroxy(oxido)amino)-2H-chromen-2-one NSC 519722 4-Hydroxy-3-nitrocoumarin 3-Nitro-4-hydroxycoumarin CAS 20261-31-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 20261-31-8 |
| Molecular Formula | C9H11NO5 |
| Molecular Weight | 213.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
20261-31-8 4-Hydroxy-3-(hydroxy(oxido)amino)-2H-chromen-2-one NSC 519722 4-Hydroxy-3-nitrocoumarin 3-Nitro-4-hydroxycoumarin (CAS 20261-31-8) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C9H11NO5. Molecular weight: 213.19 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C9H11NO5 |
| Molecular Weight | 213.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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