Ethyl 5-oxo-5-(phenanthren-9-yl)pentanoate CAS 898752-88-0
| CAS No. | 898752-88-0 |
| Molecular Formula | C21H20O3 |
| Molecular Weight | 320.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 320.38 g/mol gives Ethyl 5-oxo-5-(phenanthren-9-yl)pentanoate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 5-oxo-5-(phenanthren-9-yl)pentanoate (CAS 898752-88-0) is a high-purity analytical reference standard with the molecular formula C21H20O3 and a molecular weight of 320.38 g/mol.
Ethyl 5-oxo-5-(phenanthren-9-yl)pentanoate (C21H20O3) contains a steroid core, a hydroxyl group, an ether linkage. 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C21H20O3 |
| Molecular Weight | 320.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Recommended Standards
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