3-Bromopyrazolo[1,5-a]pyrimidine-5,7(4H,6H)-dione CAS 57489-76-6
| CAS No. | 57489-76-6 |
| Molecular Formula | C6H4BrN3O2 |
| Molecular Weight | 230.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Bromopyrazolo[1,5-a]pyrimidine-5,7(4H,6H)-dione (CAS 57489-76-6) is a high-purity analytical reference standard with the molecular formula C6H4BrN3O2 and a molecular weight of 230.02 g/mol.
3-Bromopyrazolo[1,5-a]pyrimidine-5,7(4H,6H)-dione (C6H4BrN3O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. 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).
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.
As a certified reference material (CRM), 3-Bromopyrazolo[1,5-a]pyrimidine-5,7(4H,6H)-dione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H4BrN3O2 |
| Molecular Weight | 230.02 g/mol |
| Appearance | Off-white to pale 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 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromopyrazolo Standards
- 6-bromopyrazolo[1,5-a]pyridine-3-carbonitrile (CAS 2092835-01-1)
- 8-Bromopyrazolo[1,5-a][1,3,5]triazine-2,4-diamine (CAS 1783318-15-9)
- {6-Bromopyrazolo[1,5-a]pyrimidin-2-yl}methanol (CAS 1263057-20-0)
- (6-bromopyrazolo[1,5-a]pyrimidin-3-yl)methanol (CAS 1263057-74-4)
- (3-Bromopyrazolo[1,5-a]pyrimidin-6-yl)methanol (CAS 1823966-02-4)
- 6-Bromopyrazolo[1,5-a]pyrimidine-3-carbaldehyde (CAS 1263060-72-5)
- 3-bromopyrazolo[1,5-a]pyrimidine-6-carbaldehyde (CAS 1234616-43-3)
- 5-Bromopyrazolo[1,5-a]pyridine-3-carbaldehyde (CAS 1101120-53-9)
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