1-(3-Phenyl-1,2-oxazol-5-yl)ethan-1-one CAS 2048-69-3
| CAS No. | 2048-69-3 |
| Molecular Formula | C11H9NO2 |
| Molecular Weight | 187.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1-(3-Phenyl-1,2-oxazol-5-yl)ethan-1-one (CAS 2048-69-3), a certified reference material (molecular formula C11H9NO2, MW 187.19 g/mol) for analytical method development and quality control.
Structurally, 1-(3-Phenyl-1,2-oxazol-5-yl)ethan-1-one (C11H9NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 187.19 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C11H9NO2 |
| Molecular Weight | 187.19 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Phenyl Standards
- 1-(5-phenyl-1,3-oxazol-2-yl)ethan-1-one (CAS 108665-59-4)
- 1-(2-phenyl-1,3-oxazol-5-yl)ethan-1-one (CAS 191925-66-3)
- Oxazol-2-yl(m-tolyl)methanone (CAS 898759-56-3)
- Oxazol-2-yl(o-tolyl)methanone (CAS 898759-53-0)
- 2-{[(5-methyl-1,2-oxazol-3-yl)methyl]sulfanyl}acetic acid (CAS 1018168-09-6)
- 2-(2-Phenyl-1,3-oxazol-4-yl)Ethylamine (CAS 803641-67-0)
- (4-(Oxazol-2-yl)phenyl)boronic acid (CAS 1082066-51-0)
- (3-(Oxazol-2-yl)phenyl)boronic acid (CAS 1283174-33-3)
Recommended Standards
- 1-(3-Methylphenyl)-1H-pyrrole-2,5-dione (CAS 20299-79-0)
- 1-(4-Hydroxyphenyl)-1h-pyrrole-2-carbaldehyde (CAS 444077-56-9)
- 1-(3-Hydroxyquinolin-5-yl)ethan-1-one (CAS 2089651-70-5)
- 1-(4-Hydroxyphenyl)pyridin-2(1H)-one (CAS 859538-51-5)
- 2,3-Dihydro-5-Phenyl-7-(Trifluoromethyl)-1H-1,4-Benzodiazepine (CAS 2890-28-0)
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- (11aR)-10,11,12,13-Tetrahydro-N,N,3,7-tetramethyl-diindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-amine (CAS 930784-57-9)
- (S)-4-Amino-2-((ethoxycarbonyl)amino)-4-oxobutanoic acid (CAS 16639-91-1)
- Thiophene, 3,4-diphenyl- (CAS 16939-13-2)
- 3-Bromo-1-ethylpyrazin-2(1H)-one (CAS 1187017-24-8)
- (R,E)-N-(1-(Naphthalen-1-yl)ethylidene)-1-phenylethanamine (CAS 100430-65-7)
- 7-Methyl-1,3,5-triazaadamantane (CAS 38705-10-1)
- 4-Oxo-N-phenyl-1-(3-(trifluoromethyl)phenyl)-1,4-dihydropyridazine-3-carboxamide (CAS 478063-41-1)
- Semaglutide-d8 Tetratrifluoroacetate (CAS CATO-C4X-222617)
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