5-(4-Ethynylphenyl)oxazole CAS 501944-63-4
| CAS No. | 501944-63-4 |
| Molecular Formula | C11H7NO |
| Molecular Weight | 169.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(4-Ethynylphenyl)oxazole (CAS 501944-63-4), molecular formula C11H7NO and molecular weight 169.18 g/mol, is a CATO reference standard with documented purity and traceability.
5-(4-Ethynylphenyl)oxazole (C11H7NO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; 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.
CATO manufactures 5-(4-Ethynylphenyl)oxazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H7NO |
| Molecular Weight | 169.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 1 |
Related Ethynylphenyl Standards
- n-(3-Ethynylphenyl)propiolamide (CAS 1247503-79-2)
- N-(4-ethynylphenyl)prop-2-ynamide (CAS 1267622-99-0)
- 2-(4-Ethynylphenyl)-2-methylpropanenitrile (CAS 1314647-58-9)
- 1-(3-Ethynylphenyl)bicyclo[1.1.1]Pentane (CAS 1823936-00-0)
- 1-(4-Ethynylphenyl)-1H-imidazole (CAS 1123827-71-3)
- 2-(4-Ethynylphenyl)-1H-imidazole (CAS 1270965-27-9)
- 1-(4-Ethynylphenyl)-1H-pyrazole (CAS 1270965-28-0)
- 1-(2-Ethynylphenyl)-1H-pyrazole (CAS 2228848-05-1)
Recommended Standards
- 5-(4-Aminobutylidene)imidazolidine-2,4-dione (CAS 743388-41-2)
- 5-(Dimethoxymethyl)pyrimidin-4-amine (CAS 51290-89-2)
- 5-(2-Methoxyethoxy)pyrimidin-2-amine (CAS 3603-07-4)
- 5-(Methoxymethyl)-1-methyl-1H-pyrrole-3-carboxylic acid (CAS 2388475-34-9)
- Victoria Blue B (CAS 2580-56-5)
- 3-(Cycloheptyloxy)pyrrolidine (CAS 1339786-95-6)
- 2-Allyl-2H-benzo[d][1,2,3]triazole (CAS 82813-00-1)
- 2-(4-(Difluoromethyl)-3-methoxy-5-nitropyridin-2-yl)acetic acid (CAS 1805069-77-5)
- Pirlimycin (CAS 79548-73-5)
- 3-Oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-boronic Acid Pinacol Ester (CAS 1551418-99-5)
- 4-(2-Hydroxy-3-((2-methoxyphenyl)sulfonyl)propoxy)benzonitrile (CAS 478079-82-2)
- 3-(1,2,2-Triphenylvinyl)benzaldehyde (CAS 2138330-46-6)
- 2-(2-Bromoethoxy)tetrahydro-2H-pyran, 96% (CAS 17739-45-6)
- Semaglutide impurity 195 (CAS CATO-C4X-2226195)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com