N-{[3-(2-Chlorophenyl)-5-isoxazolyl]methyl}-4-methoxybenzenesulfonamide CAS 343372-69-0
| CAS No. | 343372-69-0 |
| Molecular Formula | C17H15ClN2O4S |
| Molecular Weight | 378.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including N-{[3-(2-Chlorophenyl)-5-isoxazolyl]methyl}-4-methoxybenzenesulfonamide.
N-{[3-(2-Chlorophenyl)-5-isoxazolyl]methyl}-4-methoxybenzenesulfonamide (CAS 343372-69-0) is a high-purity analytical reference standard with the molecular formula C17H15ClN2O4S and a molecular weight of 378.83 g/mol.
Structurally, N-{[3-(2-Chlorophenyl)-5-isoxazolyl]methyl}-4-methoxybenzenesulfonamide (C17H15ClN2O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 378.83 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C17H15ClN2O4S |
| Molecular Weight | 378.83 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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- Semaglutide impurity 235 (CAS CATO-C4X-2226235)
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