8-Bromo-6-chloro-2-oxo-2H-chromene-3-carboxylic acid CAS 213749-64-5
| CAS No. | 213749-64-5 |
| Molecular Formula | C10H4BrClO4 |
| Molecular Weight | 303.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 8-Bromo-6-chloro-2-oxo-2H-chromene-3-carboxylic acid (CAS 213749-64-5), a certified reference material (molecular formula C10H4BrClO4, MW 303.49 g/mol) for analytical method development and quality control.
Based on its molecular formula C10H4BrClO4, 8-Bromo-6-chloro-2-oxo-2H-chromene-3-carboxylic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 303.49 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 8-Bromo-6-chloro-2-oxo-2H-chromene-3-carboxylic acid 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 | C10H4BrClO4 |
| Molecular Weight | 303.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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.) | 2018 |
| Halogen Content | Cl/Br-containing |
Related Bromo Standards
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