Ethyl 2-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)acetate CAS 26673-71-2
| CAS No. | 26673-71-2 |
| Molecular Formula | C12H13NO4 |
| Molecular Weight | 235.24 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.
Ethyl 2-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)acetate (CAS 26673-71-2), molecular formula C12H13NO4 and molecular weight 235.24 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 2-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)acetate (C12H13NO4) contains an amino-acid-derived structure, an amide 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.
As a certified reference material (CRM), Ethyl 2-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)acetate 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 | C12H13NO4 |
| Molecular Weight | 235.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
Recommended Standards
- ethyl 2-(2-oxo-3,4-dihydro-2H-1,3-benzoxazin-3-yl)acetate (CAS 20068-41-1)
- Ethyl 2-(4-cyano-2-methoxyphenoxy)acetate (CAS 445014-15-3)
- Ethyl 2-(2-acetamidophenyl)-2-oxoacetate (CAS 7671-90-1)
- Ethyl 2-(4-formylbenzamido)acetate (CAS 1987453-37-1)
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