5-(4-Methoxyphenyl)oxazol-2(3H)-one CAS 2566696-23-7
| CAS No. | 2566696-23-7 |
| Molecular Formula | C10H9NO3 |
| Molecular Weight | 191.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 191.18 g/mol gives 5-(4-Methoxyphenyl)oxazol-2(3H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(4-Methoxyphenyl)oxazol-2(3H)-one (CAS 2566696-23-7), molecular formula C10H9NO3 and molecular weight 191.18 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H9NO3, 5-(4-Methoxyphenyl)oxazol-2(3H)-one contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 191.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C10H9NO3 |
| Molecular Weight | 191.18 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Nitrogen Atoms | 1 |
Related Methoxyphenyl Standards
- 2-(4-Methoxyphenyl)oxazol-5(4H)-one (CAS 75152-19-1)
- 3-(2-methoxyphenyl)-4,5-dihydro-1,2-oxazol-5-one (CAS 24031-70-7)
- 3-(3-Methoxyphenyl)isoxazol-5(4H)-one (CAS 248470-38-4)
- 3-(4-Methoxyphenyl)isoxazol-5(4H)-one (CAS 31709-47-4)
- 5-(2-Methoxyphenyl)isoxazol-3-ol (CAS 24157-90-2)
- 3-(4-Methoxyphenyl)-1,2,4-oxadiazol-5-amine (CAS 114065-39-3)
- 4-(3-methoxyphenyl)-1,2,5-oxadiazol-3-amine (CAS 1249939-19-2)
- 5-(3-Methoxyphenyl)-1,2,4-oxadiazol-3-amine (CAS 1340284-34-5)
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