6-Bromo-7-chloroquinoxalin-2(1H)-one CAS 2728675-00-9
| CAS No. | 2728675-00-9 |
| Molecular Formula | C8H4BrClN2O |
| Molecular Weight | 259.49 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.
6-Bromo-7-chloroquinoxalin-2(1H)-one (CAS 2728675-00-9) is a high-purity analytical reference standard with the molecular formula C8H4BrClN2O and a molecular weight of 259.49 g/mol.
Based on its molecular formula C8H4BrClN2O, 6-Bromo-7-chloroquinoxalin-2(1H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 259.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C8H4BrClN2O |
| Molecular Weight | 259.49 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- (1-tert-butoxycarbonylazetidin-3-yl)boronic acid (CAS 2750139-24-1)
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- Tetrahydro-2H-3,5-methanocyclopenta[b]furan-2,6(3H)-dione (CAS 16479-73-5)
- 5,6-Diamino-1-butyl-3-methylpyrimidine-2,4(1H,3H)-dione (CAS 91260-72-9)
- Mivacurium chloride Impurity 46 (CAS CATO-C4X-137546)
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