4-(Ethylsulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid CAS 953734-90-2
| CAS No. | 953734-90-2 |
| Molecular Formula | C11H13NO5S |
| Molecular Weight | 271.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-(Ethylsulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid 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.
CATO supplies 4-(Ethylsulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid (CAS 953734-90-2), a certified reference material (molecular formula C11H13NO5S, MW 271.29 g/mol) for analytical method development and quality control.
4-(Ethylsulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid (C11H13NO5S) contains a nitrogen-containing heterocyclic scaffold, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H13NO5S |
| Molecular Weight | 271.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethylsulfonyl Standards
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- 4-(4-(Ethylsulfonyl)piperazin-1-yl)aniline (CAS 611400-14-7)
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Recommended Standards
- 4-(3-Oxobenzo[d]isothiazol-2(3H)-yl)benzoic acid (CAS 78471-84-8)
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