5-Ethoxy-3-phenylisoxazole CAS 23244-34-0
| CAS No. | 23244-34-0 |
| Molecular Formula | C11H11NO2 |
| Molecular Weight | 189.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Ethoxy-3-phenylisoxazole (CAS 23244-34-0) is a high-purity analytical reference standard with the molecular formula C11H11NO2 and a molecular weight of 189.21 g/mol.
The molecular framework of 5-Ethoxy-3-phenylisoxazole (C11H11NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 5-Ethoxy-3-phenylisoxazole 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 | C11H11NO2 |
| Molecular Weight | 189.21 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 5-ethyl-1-methyl-1H-indole-2,3-dione (CAS 852399-54-3)
- 5-cyclohexyl-1H-1,2,3,4-tetrazole (CAS 6280-34-8)
- 5-Ethylindole-2-carboxylic acid (CAS 37033-93-5)
- 5-Amino-4-o-tolyl-1,2-dihydro-pyrazol-3-one (CAS 247184-07-2)
- 4,7-Difluoroisatin (CAS 749240-52-6)
- (3-(2-Ethoxyphenyl)isoxazol-5-yl)methanamine (CAS 543713-35-5)
- N-(2-(N-(2-(Cyclohex-1-en-1-yl)ethyl)sulfamoyl)ethyl)benzamide (CAS 899956-00-4)
- NHBoc-PEG2-NH-CH2COOH (CAS 356066-44-9)
- 1-Cyano-8-methylnaphthalene (CAS 71235-71-7)
- Hydroxypiperidine-2-carboxylic Acid (CAS 56879-47-1)
- 3-[(3,4-difluorophenyl)thio]propanoic acid (CAS 863667-96-3)
- H-Thr-Thr-pNA (CAS 390361-42-9)
- 2-(4-(Dimethoxymethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 943239-68-7)
- Des-[Ser]8-Liraglutide (CAS CATO-C4X-199233)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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