(16α)-21-(Acetyloxy)-16-methyl-pregna-1,4,9(11)-triene-3,20-dione CAS 4258-83-7
| CAS No. | 4258-83-7 |
| Molecular Formula | C24H30O4 |
| Molecular Weight | 382.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(16α)-21-(Acetyloxy)-16-methyl-pregna-1,4,9(11)-triene-3,20-dione (CAS 4258-83-7) is a high-purity analytical reference standard with the molecular formula C24H30O4 and a molecular weight of 382.49 g/mol.
(16α)-21-(Acetyloxy)-16-methyl-pregna-1,4,9(11)-triene-3,20-dione (C24H30O4) contains a flavonoid 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.
As a certified reference material (CRM), (16α)-21-(Acetyloxy)-16-methyl-pregna-1,4,9(11)-triene-3,20-dione 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 | C24H30O4 |
| Molecular Weight | 382.49 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Acetyloxy Standards
- (6α)-21-(Acetyloxy)-6-fluoropregna-1,4,9(11),16-tetraene-3,20-dione (CAS 2476-74-6)
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