1-Phenyl-4,5-dihydro-[1,4]oxazepino[5,4-a]isoindole-2,7-dione CAS 205243-92-1
| CAS No. | 205243-92-1 |
| Molecular Formula | C18H13NO3 |
| Molecular Weight | 291.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-Phenyl-4,5-dihydro-[1,4]oxazepino[5,4-a]isoindole-2,7-dione (CAS 205243-92-1) is a high-purity analytical reference standard with the molecular formula C18H13NO3 and a molecular weight of 291.30 g/mol.
The molecular framework of 1-Phenyl-4,5-dihydro-[1,4]oxazepino[5,4-a]isoindole-2,7-dione (C18H13NO3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C18H13NO3 |
| Molecular Weight | 291.30 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Nitrogen Atoms | 1 |
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- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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