3,4,5-Triphenyl-4,5-dihydroisoxazole CAS 14659-67-7
| CAS No. | 14659-67-7 |
| Molecular Formula | C21H17NO |
| Molecular Weight | 299.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,4,5-Triphenyl-4,5-dihydroisoxazole (CAS 14659-67-7), molecular formula C21H17NO and molecular weight 299.37 g/mol, is a CATO reference standard with documented purity and traceability.
3,4,5-Triphenyl-4,5-dihydroisoxazole (C21H17NO) contains a steroid core, 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 3,4,5-Triphenyl-4,5-dihydroisoxazole 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 | C21H17NO |
| Molecular Weight | 299.37 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Triphenyl Standards
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Recommended Standards
- 1-(2-(Ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl)-2-methylpropan-2-ol (CAS 144875-99-0)
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- 1-(Cyclopropylmethyl)-4-((pyridin-3-ylmethoxy)methyl)-4,5,6,7-tetrahydro-1H-[1,2,3]triazolo[4,5-c]pyridine (CAS 1422133-53-6)
- Ethyl 5-(methylsulfonamido)benzo[b]thiophene-2-carboxylate (CAS 1631712-98-5)
- 6-Bromo-4-hydroxy-7-(trifluoromethyl)quinoline-3-carboxylic acid (CAS 1065093-93-7)
- 1-(6-Chloro-1-(2-ethoxyethyl)-1H-benzo[d]imidazol-2-yl)ethan-1-ol (CAS 1243677-44-2)
- 4,6-Dichloro-2-(pyrrolidin-1-yl)pyrimidine-5-carbaldehyde (CAS 1206969-28-9)
- Cobicistat impurity 11 (CAS 1247119-33-0)
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- tert-Butyl 3-(2-chloroacetamido)piperidine-1-carboxylate (CAS 1332528-95-6)
- 3-Bromo-2,5-difluorobenzenethiol (CAS 1349718-58-6)
- 3-Hydroxy-N'-(2-hydroxybenzylidene)-2-naphthohydrazide (CAS 80648-84-6)
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