3-Oxo-2-(2-oxo-2-(thiophen-2-yl)ethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid CAS 904818-85-5
| CAS No. | 904818-85-5 |
| Molecular Formula | C15H10N2O4S |
| Molecular Weight | 314.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-Oxo-2-(2-oxo-2-(thiophen-2-yl)ethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid (C15H10N2O4S) 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. 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).
3-Oxo-2-(2-oxo-2-(thiophen-2-yl)ethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid (CAS 904818-85-5), molecular formula C15H10N2O4S and molecular weight 314.32 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3-Oxo-2-(2-oxo-2-(thiophen-2-yl)ethylidene)-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C15H10N2O4S |
| Molecular Weight | 314.32 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- 3-(Hydroxymethyl)-5-(6-(methylthio)-9H-purin-9-yl)-1,4-dioxane-2,6-diol (CAS 51112-62-0)
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- N-(4-Fluorophenyl)-6-morpholino-9H-purin-2-amine (CAS 1251578-67-2)
- 4-{5-[(4-Nitrobenzyl)sulfanyl]-1,3,4-oxadiazol-2-yl}pyridine (CAS 441289-28-7)
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- Phenyl-d (CAS 83286-56-0)
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- (3R,4R)-4-Aminopyrrolidine-3-carboxylic Acid (CAS 569682-61-7)
- Tau Peptide (273-284) trifluoroacetate salt (CAS 1663490-91-2)
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