7-Bromo-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid CAS 885271-82-9
| CAS No. | 885271-82-9 |
| Molecular Formula | C9H5BrN2O3 |
| Molecular Weight | 269.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Bromo-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7-Bromo-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid (CAS 885271-82-9), molecular formula C9H5BrN2O3 and molecular weight 269.05 g/mol, is a CATO reference standard with documented purity and traceability.
7-Bromo-3-oxo-3,4-dihydroquinoxaline-2-carboxylic acid (C9H5BrN2O3) 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.
CATO manufactures 7-Bromo-3-oxo-3,4-dihydroquinoxaline-2-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 | C9H5BrN2O3 |
| Molecular Weight | 269.05 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 6-Bromo-4-oxo-1,4-dihydroquinazoline-2-carboxylic acid (CAS 1029420-52-7)
- 4-Bromo-7-nitroisoquinolin-1(2H)-one (CAS 1036390-36-9)
- 3-Bromo-1-(4-nitrophenyl)-1H-1,2,4-triazole (CAS 1129540-71-1)
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Recommended Standards
- 7-Bromo-3-nitroquinolin-4-ol (CAS 723280-94-2)
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- 6-Chloro-4-fluoro-1H-indazole (CAS 885523-37-5)
- 7-Bromo-4-oxo-3,4-dihydrophthalazine-1-carboxylic acid (CAS 2629316-01-2)
- N-isopropyl-3-phenylpropan-1-amine hydrochloride (CAS 83979-37-7)
- 1-Cyclopropyl-2-(piperidin-2-yl)ethan-1-one (CAS 1525685-79-3)
- 5-Chloropyridine-2,4-diol (CAS 1253661-61-8)
- 3-Ethylcarbazole (CAS 5599-49-5)
- methyl({2-[methyl(2,2,2-trifluoroethyl)amino]ethyl})amine (CAS 1096348-60-5)
- 2-(Chloromethyl)-4-(propan-2-yl)morpholine (CAS 48119-30-8)
- Ethyl 7-chloro-6-formyl-2-(2-(piperidin-1-yl)acetamido)-4,5-dihydrobenzo[b]thiophene-3-carboxylate (CAS 312278-79-8)
- [2-(4-methylpiperazin-1-yl)-5-(trifluoromethyl)phenyl]methanamine (CAS 1094329-66-4)
- 2-Chloro-1-(4-(cyclopropanecarbonyl)piperazin-1-yl)ethan-1-one (CAS 1018304-01-2)
- Acetyl Hexapeptide-39 (CAS 1382088-38-1)
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