3-(Benzo[d]oxazol-2-yl)-7-hydroxy-2H-chromen-2-one CAS 64887-40-7
| CAS No. | 64887-40-7 |
| Molecular Formula | C16H9NO4 |
| Molecular Weight | 279.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-(Benzo[d]oxazol-2-yl)-7-hydroxy-2H-chromen-2-one 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.
3-(Benzo[d]oxazol-2-yl)-7-hydroxy-2H-chromen-2-one (CAS 64887-40-7), molecular formula C16H9NO4 and molecular weight 279.25 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H9NO4, 3-(Benzo[d]oxazol-2-yl)-7-hydroxy-2H-chromen-2-one contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 279.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C16H9NO4 |
| Molecular Weight | 279.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- 6-Bromo-3-(difluoromethyl)-5-fluoropicolinonitrile (CAS 1805366-64-6)
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- Methyl 2-mercapto-1-methyl-1H-imidazole-5-carboxylate (CAS 68892-07-9)
- 2-(3-Hydroxy-4-methylphenyl)acetic acid (CAS 103262-83-5)
- 5-(Azidomethyl)-2-chloropyridine (CAS 114780-17-5)
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- Sarecycline Impurity 6 (CAS CATO-C4X-27986)
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