(2Z)-2-[2-(2H-1,3-Benzodioxol-5-yl)-2-oxoethylidene]-3-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid CAS 904818-57-1
| CAS No. | 904818-57-1 |
| Molecular Formula | C18H12N2O6 |
| Molecular Weight | 352.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(2Z)-2-[2-(2H-1,3-Benzodioxol-5-yl)-2-oxoethylidene]-3-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid (CAS 904818-57-1), molecular formula C18H12N2O6 and molecular weight 352.30 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (2Z)-2-[2-(2H-1,3-Benzodioxol-5-yl)-2-oxoethylidene]-3-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid (C18H12N2O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 352.30 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), (2Z)-2-[2-(2H-1,3-Benzodioxol-5-yl)-2-oxoethylidene]-3-oxo-1,2,3,4-tetrahydroquinoxaline-6-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.
Physical & Chemical Properties
| Molecular Formula | C18H12N2O6 |
| Molecular Weight | 352.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Recommended Standards
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