2-Ethyl-4-(4-methylbenzylidene)oxazol-5(4H)-one CAS 538339-32-1
| CAS No. | 538339-32-1 |
| Molecular Formula | C13H13NO2 |
| Molecular Weight | 215.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Ethyl-4-(4-methylbenzylidene)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.
2-Ethyl-4-(4-methylbenzylidene)oxazol-5(4H)-one (CAS 538339-32-1) is a high-purity analytical reference standard with the molecular formula C13H13NO2 and a molecular weight of 215.25 g/mol.
Based on its molecular formula C13H13NO2, 2-Ethyl-4-(4-methylbenzylidene)oxazol-5(4H)-one 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 215.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C13H13NO2 |
| Molecular Weight | 215.25 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.) | 1984 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- 5-(4-Methylbenzylidene)-2-thioxooxazolidin-4-one (CAS 52345-31-0)
- (E)-2-((4-methylbenzylidene)amino)thiophene-3-carbonitrile (CAS 338777-53-0)
- (Z)-5-(4-Methylbenzylidene)imidazolidine-2,4-dione (CAS 109754-07-6)
- 5-(4-methylbenzylidene)imidazolidine-2,4-dione (CAS 28744-88-9)
- 2-Methyl-4-(4-methylbenzylidene)oxazol-5(4H)-one (CAS 68835-32-5)
- 3-Ethyl-5-(2-methylbenzylidene)imidazolidine-2,4-dione (CAS 641995-96-2)
- 5-(4-MEthylbenzylidene)-2-thioxo-1,3-thiazolidin-4-one (CAS 875572-77-3)
- (Z)-2-(4-Methylbenzylidene)benzofuran-3(2H)-one (CAS 97871-89-1)
Recommended Standards
- 2-ethyl-3-methylquinoline-8-carboxylic acid (CAS 68742-10-9)
- 2-ethyl-4-methylquinoline-3-carboxylic acid (CAS 847837-40-5)
- 2-Ethyl-3-methylquinoline-4-carboxylic acid (CAS 74960-58-0)
- 2-isopropylquinoline-4-carboxylic acid (CAS 306749-60-0)
- 1-Nitroso-6-(trifluoromethyl)quinolin-4(1H)-one (CAS CATO-C3D-263039)
- 1-(4-(Difluoromethoxy)-3-iodophenyl)propan-1-one (CAS 1261675-08-4)
- 3-(4-Ethoxyphenyl)-2-(piperazin-1-ylmethyl)-3H-imidazo[4,5-b]pyridine (CAS 1031563-63-9)
- Methyl 6-fluorohexanoate (CAS 333-07-3)
- 3-(1-Phenylethoxy)azetidine (CAS 1341182-94-2)
- Dimethyl 3-aminopyridine-2,5-dicarboxylate (CAS 1260666-11-2)
- 1-([1,1'-Biphenyl]-4-yl)-3-((4-chlorophenyl)amino)propan-1-one (CAS 279672-38-7)
- 0278AD 1185296-87-0 4-(1-Methyl-1-phenylethyl)phenyl4-piperidinyl ether hydrochloride C20H26ClNO (CAS 1185296-87-0)
- Tert-butyl 7-hydroxy-2-azaspiro[4.5]Decane-2-carboxylate (CAS 2168106-02-1)
- Semaglutide impurity 27 (CAS CATO-C4X-222627)
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