N-(2-(4-oxo-4H-benzo[d][1,3]oxazin-2-yl)phenyl)naphthalene-2-sulfonamide CAS 10128-55-9
| CAS No. | 10128-55-9 |
| Molecular Formula | C24H16N2O4S |
| Molecular Weight | 428.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of N-(2-(4-oxo-4H-benzo[d][1,3]oxazin-2-yl)phenyl)naphthalene-2-sulfonamide is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies N-(2-(4-oxo-4H-benzo[d][1,3]oxazin-2-yl)phenyl)naphthalene-2-sulfonamide (CAS 10128-55-9), a certified reference material (molecular formula C24H16N2O4S, MW 428.46 g/mol) for analytical method development and quality control.
N-(2-(4-oxo-4H-benzo[d][1,3]oxazin-2-yl)phenyl)naphthalene-2-sulfonamide (C24H16N2O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C24H16N2O4S |
| Molecular Weight | 428.46 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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