3,7-Dibromo-4H-chromen-4-one CAS 1159978-70-7
| CAS No. | 1159978-70-7 |
| Molecular Formula | C9H4Br2O2 |
| Molecular Weight | 303.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 303.93 g/mol gives 3,7-Dibromo-4H-chromen-4-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3,7-Dibromo-4H-chromen-4-one (CAS 1159978-70-7), a certified reference material (molecular formula C9H4Br2O2, MW 303.93 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H4Br2O2, 3,7-Dibromo-4H-chromen-4-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 303.93 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures 3,7-Dibromo-4H-chromen-4-one 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 | C9H4Br2O2 |
| Molecular Weight | 303.93 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 3,6-Dibromo-4H-chromen-4-one (CAS 115237-39-3)
- 3,7-Dibromo-2H-chromen-2-one (CAS 1220702-33-9)
- 4,5-Dibromo-3-fluorothiophene-2-carboxylic acid (CAS 1628447-64-2)
- 2,2-Dibromo-1H-indene-1,3(2H)-dione (CAS 1685-97-8)
- 3,6-Dibromo-2H-chromen-2-one (CAS 58309-97-0)
- 6,8-Dibromo-2H-chromen-2-one (CAS 21524-15-2)
- 4,7-Dibromo-1H-pyrrolo[3,2-c]pyridine-3-carbaldehyde (CAS 1000341-95-6)
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Recommended Standards
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- Methyl 3-bromo-5-(((tert-butyldiphenylsilyl)oxy)methyl)benzoate (CAS 2411829-04-2)
- Isothiazolo[3,4-d]pyrimidine (CAS 14521-32-5)
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- FP-Biotin(Mixture of Diastereomers) (CAS 259270-28-5)
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