5,7-Dibromo-2-methyl-2,3-dihydrobenzofuran CAS 89819-20-5
| CAS No. | 89819-20-5 |
| Molecular Formula | C9H8Br2O |
| Molecular Weight | 291.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 291.97 g/mol gives 5,7-Dibromo-2-methyl-2,3-dihydrobenzofuran distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5,7-Dibromo-2-methyl-2,3-dihydrobenzofuran (CAS 89819-20-5), a certified reference material (molecular formula C9H8Br2O, MW 291.97 g/mol) for analytical method development and quality control.
5,7-Dibromo-2-methyl-2,3-dihydrobenzofuran (C9H8Br2O) contains a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H8Br2O |
| Molecular Weight | 291.97 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 1,2-Dibromo-4-cyclopropoxybenzene (CAS 1243409-73-5)
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Recommended Standards
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- n-Butyl-3-iodoaniline hydrochloride (CAS 1311316-48-9)
- 2-(1-Methylimidazolidin-2-ylidene)-1-phenylethanone (CAS 135586-30-0)
- 1-(5-Fluorobenzofuran-2-yl)ethanone (CAS 1267138-82-8)
- Decahydronaphthalene (CAS 91-17-8)
- 3-Chlorooctahydro-5,8-methanoquinolin-2(1H)-one (CAS 92742-32-0)
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