2,3-Di(furan-2-yl)quinoxaline-6-carboxylic acid CAS 90846-59-6
| CAS No. | 90846-59-6 |
| Molecular Formula | C17H10N2O4 |
| Molecular Weight | 306.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,3-Di(furan-2-yl)quinoxaline-6-carboxylic acid (C17H10N2O4) contains a flavonoid core, 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. 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).
2,3-Di(furan-2-yl)quinoxaline-6-carboxylic acid (CAS 90846-59-6), molecular formula C17H10N2O4 and molecular weight 306.27 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C17H10N2O4 |
| Molecular Weight | 306.27 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.) | 1982 |
| Nitrogen Atoms | 2 |
Related Di Standards
- 6-(Furan-2-yl)-3-phenylisoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 937597-65-4)
- Bis(furan-2-ylmethyl) adipate (CAS 61190-77-0)
- Methyl 3-(furan-2-yl)propanoate (CAS 37493-31-5)
- 4-(Furan-2-yl)-5-oxo-2-(1H-pyrrol-1-yl)-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile (CAS 478261-81-3)
- 1-[(5E)-5-[(Furan-2-yl)methylidene]-4-oxo-4,5-dihydro-1,3-thiazol-2-yl]piperidine-4-carboxylic acid (CAS 866050-37-5)
- 2-((Furan-2-ylmethyl)amino)-2-oxoethyl 2-(methylthio)nicotinate (CAS 380188-98-7)
- N-(Furan-3-ylmethyl)-N-(2-methoxyethyl)-2-(methylthio)nicotinamide (CAS 1421457-38-6)
- 1-(Furan-2-ylmethyl)-1-(tetrahydro-2H-pyran-4-yl)-3-(thiophen-2-yl)urea (CAS 1448047-11-7)
Recommended Standards
- 2-(4-((Butylthio)methyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2377609-13-5)
- 2,4-Diethoxy-6-(4-nitrophenoxy)-1,3,5-triazine (CAS 866151-21-5)
- 1,1'-Methylenebis(indoline-2,3-dione) (CAS 54790-42-0)
- 2-bromo-1-(2-trimethylsilylethoxymethyl)imidazole-4-carbonitrile (CAS 854044-51-2)
- (Anthracene-9,10-diylbis(4,1-phenylene))dimethanamine (CAS 1486563-21-6)
- 2-(1-benzofuran-5-yl)-1H-imidazole (CAS 1378801-12-7)
- 3,5-Diethyl 1-[2-(4-methylphenyl)-2-oxoethyl]-1H-pyrazole-3,5-dicarboxylate (CAS 1638612-88-0)
- Itopride Impurity 18 (CAS 24197-95-3(Free Base))
- 8-iodo-2-methylsulfanyl-pyrido[4,3-d]pyrimidine (CAS 1562987-91-0)
- (3-Fluoro-2-methylphenyl)(methyl)sulfane (CAS 134646-04-1)
- (1-Phenyl-1h-benzo[d]imidazol-2-yl)methanamine (CAS 885270-93-9)
- n-((4s)-4-Methoxypyrrolidin-3-yl)-3-methylisoxazole-5-carboxamide (CAS 1217988-01-6)
- 5-(2-Chloro-5-nitrophenyl)-3-(pyridin-2-yl)-1,2,4-oxadiazole (CAS 432018-14-9)
- (2S)-2-amino-4-(hydroxymethylphosphinyl)butanoyl-L-alanyl-L-alanine (2S)-2-amino-4-[hydroxy(methyl)phosphinoyl]butyryl-L-alanyl-L-alanine 2-Amino-4-(methylphosphino)butyrylalanylalanine 35597-43-4 Antibiotic SF 1293 Bialaphos CHEBI:3088 L-phosphinothricyl-L-alanyl-L-alanine N-{(2S)-2-amino-4-[hydroxy(methyl)phosphoryl]butanoyl}-L-alanyl-L-alanine PTT Phosphinothricylalanylalanine bilanafos gamma-(Hydroxymethylphosphinyl)-L-alpha-aminobutyryl-L-alanyl-L-alanine phosphinothricin tripeptide (CAS 35597-43-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com