3-Bromoisoxazole-5-carbaldehyde CAS 220780-57-4
| CAS No. | 220780-57-4 |
| Molecular Formula | C4H2BrNO2 |
| Molecular Weight | 175.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Bromoisoxazole-5-carbaldehyde (C4H2BrNO2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. 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 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).
3-Bromoisoxazole-5-carbaldehyde (CAS 220780-57-4) is a high-purity analytical reference standard with the molecular formula C4H2BrNO2 and a molecular weight of 175.97 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Bromoisoxazole-5-carbaldehyde 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 | C4H2BrNO2 |
| Molecular Weight | 175.97 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2020 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromoisoxazole Standards
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- 4-Bromoisoxazole-3-carbaldehyde (CAS 1553643-91-6)
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- 3-Bromoisoxazole-5-carboxylic Acid (CAS 6567-35-7)
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- 5-Bromoisoxazole (CAS 1133930-99-0)
- Methyl 3-bromoisoxazole-4-carboxylate (CAS 1447958-01-1)
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