(E)-2-Phenyl-4-(1-(p-tolyl)ethylidene)oxazol-5(4H)-one CAS 57427-95-9
| CAS No. | 57427-95-9 |
| Molecular Formula | C18H15NO2 |
| Molecular Weight | 277.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (E)-2-Phenyl-4-(1-(p-tolyl)ethylidene)oxazol-5(4H)-one.
(E)-2-Phenyl-4-(1-(p-tolyl)ethylidene)oxazol-5(4H)-one (CAS 57427-95-9) is a high-purity analytical reference standard with the molecular formula C18H15NO2 and a molecular weight of 277.32 g/mol.
(E)-2-Phenyl-4-(1-(p-tolyl)ethylidene)oxazol-5(4H)-one (C18H15NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), (E)-2-Phenyl-4-(1-(p-tolyl)ethylidene)oxazol-5(4H)-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.
Physical & Chemical Properties
| Molecular Formula | C18H15NO2 |
| Molecular Weight | 277.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 1 |
Recommended Standards
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