7-Bromo-4-hydroxycoumarin CAS 18735-82-5
| CAS No. | 18735-82-5 |
| Molecular Formula | C9H11BrO3 |
| Molecular Weight | 247.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 247.09 g/mol gives 7-Bromo-4-hydroxycoumarin distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7-Bromo-4-hydroxycoumarin (CAS 18735-82-5), molecular formula C9H11BrO3 and molecular weight 247.09 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 7-Bromo-4-hydroxycoumarin (C9H11BrO3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 7-Bromo-4-hydroxycoumarin 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 | C9H11BrO3 |
| Molecular Weight | 247.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
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- (S)-Methyl 2-(2-(((benzyloxy)carbonyl)amino)acetamido)-3-(1H-indol-3-yl)propanoate (CAS 53880-82-3)
- 1-Vinylcyclohex-3-en-1-ol (CAS 5537-04-2)
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- Semaglutide impurity 29 (CAS 1188328-22-4)
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