(Z)-4-(3,5-Di-tert-butyl-4-hydroxybenzylidene)-2-methylisoxazolidin-3-one CAS 127245-21-0
| CAS No. | 127245-21-0 |
| Molecular Formula | C19H27NO3 |
| Molecular Weight | 317.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (Z)-4-(3,5-Di-tert-butyl-4-hydroxybenzylidene)-2-methylisoxazolidin-3-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(Z)-4-(3,5-Di-tert-butyl-4-hydroxybenzylidene)-2-methylisoxazolidin-3-one (CAS 127245-21-0), molecular formula C19H27NO3 and molecular weight 317.42 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H27NO3, (Z)-4-(3,5-Di-tert-butyl-4-hydroxybenzylidene)-2-methylisoxazolidin-3-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 317.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), (Z)-4-(3,5-Di-tert-butyl-4-hydroxybenzylidene)-2-methylisoxazolidin-3-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.
Physical & Chemical Properties
| Molecular Formula | C19H27NO3 |
| Molecular Weight | 317.42 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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.) | 1993 |
| Nitrogen Atoms | 1 |
Recommended Standards
- (E)-4-(3,5-Di-tert-butyl-4-hydroxybenzylidene)-2-methylisoxazolidin-3-one (CAS 127245-20-9)
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