8-Fluoro-4H-chromen-4-one CAS 75487-85-3
| CAS No. | 75487-85-3 |
| Molecular Formula | C9H5FO2 |
| Molecular Weight | 164.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
8-Fluoro-4H-chromen-4-one (CAS 75487-85-3) is a high-purity analytical reference standard with the molecular formula C9H5FO2 and a molecular weight of 164.13 g/mol.
Based on its molecular formula C9H5FO2, 8-Fluoro-4H-chromen-4-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 164.13 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H5FO2 |
| Molecular Weight | 164.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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.) | 1978 |
| Halogen Content | F-containing |
Related Fluoro Standards
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- 7-fluoro-4H-chromen-4-one (CAS 1159979-17-5)
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Recommended Standards
- 8-Fluoro-2H-chromen-2-one (CAS 75487-83-1)
- Dimethyl (2R)-2-fluorosuccinate (CAS 76003-45-7)
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- Dimethyl 2-fluorosuccinate (CAS 94799-36-7)
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- Etomidate Impurity 16 (CAS CATO-C4X-188416)
- 6-Chloro-2-methyl-2H-pyrazolo[4,3-c]pyridine (CAS 1956327-01-7)
- Methyl 6,7-dihydro-5H-pyrrolo[2,1-c][1,2,4]triazole-7-carboxylate (CAS 1707391-58-9)
- 5-methyl-octahydro-1H-pyrrolo[3,4-c]pyridine dihydrochloride (CAS 1803598-04-0)
- Semaglutide impurity 93 (CAS CATO-C4X-222693)
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