N-(2-(4-Oxo-4H-benzo[d][1,3]oxazin-2-yl)phenyl)benzenesulfonamide CAS 10128-51-5
| CAS No. | 10128-51-5 |
| Molecular Formula | C20H14N2O4S |
| Molecular Weight | 378.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
N-(2-(4-Oxo-4H-benzo[d][1,3]oxazin-2-yl)phenyl)benzenesulfonamide (CAS 10128-51-5) is a high-purity analytical reference standard with the molecular formula C20H14N2O4S and a molecular weight of 378.40 g/mol.
The molecular framework of N-(2-(4-Oxo-4H-benzo[d][1,3]oxazin-2-yl)phenyl)benzenesulfonamide (C20H14N2O4S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), N-(2-(4-Oxo-4H-benzo[d][1,3]oxazin-2-yl)phenyl)benzenesulfonamide 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 | C20H14N2O4S |
| Molecular Weight | 378.40 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 |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
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