6-Ethyl-3-(2-fluorophenoxy)-7-hydroxy-2-methyl-4h-chromen-4-one CAS 328018-97-9
| CAS No. | 328018-97-9 |
| Molecular Formula | C18H15FO4 |
| Molecular Weight | 314.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
6-Ethyl-3-(2-fluorophenoxy)-7-hydroxy-2-methyl-4h-chromen-4-one (CAS 328018-97-9) is a high-purity analytical reference standard with the molecular formula C18H15FO4 and a molecular weight of 314.31 g/mol.
Structurally, 6-Ethyl-3-(2-fluorophenoxy)-7-hydroxy-2-methyl-4h-chromen-4-one (C18H15FO4) contains a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 314.31 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 6-Ethyl-3-(2-fluorophenoxy)-7-hydroxy-2-methyl-4h-chromen-4-one 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 | C18H15FO4 |
| Molecular Weight | 314.31 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 |
| 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 | F-containing |
Related Ethyl Standards
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