5-(4-Methoxyphenyl)-3-phenylisoxazole CAS 3672-51-3
| CAS No. | 3672-51-3 |
| Molecular Formula | C16H13NO2 |
| Molecular Weight | 251.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H13NO2, 5-(4-Methoxyphenyl)-3-phenylisoxazole 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 251.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
5-(4-Methoxyphenyl)-3-phenylisoxazole (CAS 3672-51-3), molecular formula C16H13NO2 and molecular weight 251.28 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-(4-Methoxyphenyl)-3-phenylisoxazole 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.
Physical & Chemical Properties
| Molecular Formula | C16H13NO2 |
| Molecular Weight | 251.28 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 5-(4-Methoxyphenyl)-2-phenyloxazole (CAS 62921-42-0)
- 5-(4-Methoxyphenyl)quinolin-8-ol (CAS 675880-72-5)
- 5-(4-Aminophenyl)-2-phenyl-4H-pyrazol-3-one (CAS 478398-27-5)
- 5-(5-AMinopentyl)-5-(2-furyl)-2,4-imidazolidinedione (CAS 878788-02-4)
- 2-Fluoro-4-(4-trifluoromethoxyphenyl)benzoic acid (CAS 1178720-03-0)
- 3-Chloro-4-fluoro-2-butanone (CAS 86727-59-5)
- 1-(2-Bromo-1-butoxyethyl)-4-methoxybenzene (CAS 1250020-80-4)
- Oseltamivir EP Impurity B (CAS 2125702-80-7)
- 239087-04-8 CTK4F2545 Methanone,[4-fluoro-3-(trifluoromethyl)phenyl]phenyl- (CAS 239087-04-8)
- 2-Chloro-n-hydroxybenzene-1-carbonimidoyl chloride (CAS 29568-74-9)
- 3-tert-Butyl-1-Phenyl-1H-pyrazole-4,5-diamine (CAS 957780-69-7)
- methyl 4-[(2-methoxy-2-oxoethyl)sulfanyl]butanoate (CAS 38555-40-7)
- Benzyl (R)-(pyrrolidin-3-ylmethyl)carbamate hydrochloride (CAS 872715-15-6)
- Liraglutide Impurity 13 TFA Salt (CAS CATO-C4X-199213)
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