1-Phenyl-1H-benzo[d][1,3]oxazine-2,4-dione CAS 20877-86-5
| CAS No. | 20877-86-5 |
| Molecular Formula | C14H9NO3 |
| Molecular Weight | 239.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 239.23 g/mol gives 1-Phenyl-1H-benzo[d][1,3]oxazine-2,4-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-Phenyl-1H-benzo[d][1,3]oxazine-2,4-dione (CAS 20877-86-5) is a high-purity analytical reference standard with the molecular formula C14H9NO3 and a molecular weight of 239.23 g/mol.
Based on its molecular formula C14H9NO3, 1-Phenyl-1H-benzo[d][1,3]oxazine-2,4-dione contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 239.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C14H9NO3 |
| Molecular Weight | 239.23 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 1-Nitroacridin-9-amine (CAS 21914-54-5)
- 1-Phenyl-1H-pyrazolo[3,4-d]pyrimidine-4-carboxamide (CAS 68380-48-3)
- 1-Amino-8-hydroxyanthracene-9,10-dione (CAS 63572-76-9)
- 2-((2-Amino-6-methoxy-9H-purin-9-yl)methoxy)ethanol (CAS 876373-81-8)
- 2-(Diethylamino)-1-(4-propoxyphenyl)ethanone (CAS 88675-36-9)
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- 5-(2-(Methylthio)phenyl)-1,3,4-thiadiazol-2-amine (CAS 112764-29-1)
- 1-(5-Bromopyridin-3-yl)cyclopropanecarbaldehyde (CAS 1404367-46-9)
- 7-Bromopyrazolo[1,5-a]pyridin-2-amine (CAS 1504287-12-0)
- 2-Acetyl-7-bromofluorene (CAS 34172-50-4)
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- 6-Methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid (CAS 438213-69-5)
- 6-(o-Tolyl)benzo[d]thiazol-2-amine (CAS 2436720-41-9)
- Tirzepatide Impurity 12 (CAS CATO-C4X-324012)
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