17,21-Dihydroxy-pregn-5-ene-3,11,20-trione 3,20-Diethylene Ketal CAS 101524-47-4
| CAS No. | 101524-47-4 |
| Molecular Formula | C25H36O7 |
| Molecular Weight | 448.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
17,21-Dihydroxy-pregn-5-ene-3,11,20-trione 3,20-Diethylene Ketal (CAS 101524-47-4) is a high-purity analytical reference standard with the molecular formula C25H36O7 and a molecular weight of 448.55 g/mol.
The molecular framework of 17,21-Dihydroxy-pregn-5-ene-3,11,20-trione 3,20-Diethylene Ketal (C25H36O7) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. 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).
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.
As a certified reference material (CRM), 17,21-Dihydroxy-pregn-5-ene-3,11,20-trione 3,20-Diethylene Ketal 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 | C25H36O7 |
| Molecular Weight | 448.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
Related Dihydroxy Standards
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