2,3-Diphenyl-4-(phenylsulfonyl)isoxazolidine CAS 87289-91-6
| CAS No. | 87289-91-6 |
| Molecular Formula | C21H19NO3S |
| Molecular Weight | 365.45 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.
2,3-Diphenyl-4-(phenylsulfonyl)isoxazolidine (CAS 87289-91-6) is a high-purity analytical reference standard with the molecular formula C21H19NO3S and a molecular weight of 365.45 g/mol.
Structurally, 2,3-Diphenyl-4-(phenylsulfonyl)isoxazolidine (C21H19NO3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 365.45 g/mol, it falls into the moderately-high-molecular-weight range. 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C21H19NO3S |
| Molecular Weight | 365.45 g/mol |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 3-[1-propyl-5-(pyrrolidine-1-sulfonyl)-1h-1,3-benzodiazol-2-yl]propanoic acid (CAS 749902-33-8)
- 2-((4,6-Dimethylpyrimidin-2-yl)thio)-N-(4-phenoxyphenyl)acetamide (CAS 332162-28-4)
- (1-Benzyl-4-fluoropiperidin-3-yl)methanol (CAS 1356338-80-1)
- 6-Bromo-2-ethylbenzo[d]thiazole (CAS 17142-82-4)
- 5-Chloro-2,3-dihydro-1-benzofuran (CAS 76429-69-1)
- [1,2,4]Triazolo[4,3-a]pyridine-7-carboxylic acid, 97% (CAS 1234616-66-0)
- Cefoperazone Impurity 34 (CAS CATO-C4X-114934)
- Heptyl Butyrate (CAS 5870-93-9)
- Octahydro-1H-quinolizine-9a-carbonitrile (CAS 23805-76-7)
- (1S,3R)-3-(Aminomethyl)cyclopentan-1-ol (CAS 1201787-06-5)
- Gefitinib Impurity 40 (CAS 179688-53-0)
- Palmitoyl Tripeptide-8 TFA salt (CAS 936544-53-5)
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