3-(2-Chlorophenoxy)-7-hydroxy-4H-chromen-4-one CAS 433257-59-1
| CAS No. | 433257-59-1 |
| Molecular Formula | C15H9ClO4 |
| Molecular Weight | 288.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(2-Chlorophenoxy)-7-hydroxy-4H-chromen-4-one (C15H9ClO4) contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
3-(2-Chlorophenoxy)-7-hydroxy-4H-chromen-4-one (CAS 433257-59-1) is a high-purity analytical reference standard with the molecular formula C15H9ClO4 and a molecular weight of 288.68 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.
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 | C15H9ClO4 |
| Molecular Weight | 288.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
Related Chlorophenoxy Standards
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Recommended Standards
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- Brivudine Impurity C17 (CAS 74131-08-1)
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- 4-Hydroxy-1,5-naphthyridine-3-carbonitrile (CAS 305371-00-0)
- 2-Chloro-N-(4-chloro-3-methylphenyl)acetamide (CAS 99585-90-7)
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- 5-(((6-(4-Isopropylphenyl)pyridazin-3-yl)thio)methyl)-3-(p-tolyl)-1,2,4-oxadiazole (CAS 1114915-41-1)
- Semaglutide Impurity 10 (CAS CATO-C4X-222610)
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