(16α)-9-Fluoro-16,17,21-trihydroxy-pregna-1,4-diene-3,11,20-trione 16, 21-Diacetate CAS 1868-22-0
| CAS No. | 1868-22-0 |
| Molecular Formula | C25H29FO8 |
| Molecular Weight | 476.49 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.
(16α)-9-Fluoro-16,17,21-trihydroxy-pregna-1,4-diene-3,11,20-trione 16, 21-Diacetate (CAS 1868-22-0) is a high-purity analytical reference standard with the molecular formula C25H29FO8 and a molecular weight of 476.49 g/mol.
(16α)-9-Fluoro-16,17,21-trihydroxy-pregna-1,4-diene-3,11,20-trione 16, 21-Diacetate (C25H29FO8) contains a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), (16α)-9-Fluoro-16,17,21-trihydroxy-pregna-1,4-diene-3,11,20-trione 16, 21-Diacetate 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 | C25H29FO8 |
| Molecular Weight | 476.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; 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.) | 1957 |
| Halogen Content | F-containing |
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