6,7-dibromoquinoxaline-2,3(1H,4H)-dione CAS 89891-77-0
| CAS No. | 89891-77-0 |
| Molecular Formula | C8H4Br2N2O2 |
| Molecular Weight | 319.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 319.94 g/mol gives 6,7-dibromoquinoxaline-2,3(1H,4H)-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
6,7-dibromoquinoxaline-2,3(1H,4H)-dione (CAS 89891-77-0) is a high-purity analytical reference standard with the molecular formula C8H4Br2N2O2 and a molecular weight of 319.94 g/mol.
6,7-dibromoquinoxaline-2,3(1H,4H)-dione (C8H4Br2N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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.
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 | C8H4Br2N2O2 |
| Molecular Weight | 319.94 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related dibromoquinoxaline Standards
Recommended Standards
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- Bendamustine Impurity 6 (CAS CATO-C4X-12716)
- Semaglutide impurity 80 (CAS CATO-C4X-222680)
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