(20S)-21-[[Tris(isopropyll)silyl]oxy]-20-methyl-pregn-4-en-3-one CAS 356063-47-3
| CAS No. | 356063-47-3 |
| Molecular Formula | C31H54O2Si |
| Molecular Weight | 486.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (20S)-21-[[Tris(isopropyll)silyl]oxy]-20-methyl-pregn-4-en-3-one 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.
(20S)-21-[[Tris(isopropyll)silyl]oxy]-20-methyl-pregn-4-en-3-one (CAS 356063-47-3) is a high-purity analytical reference standard with the molecular formula C31H54O2Si and a molecular weight of 486.84 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, (20S)-21-[[Tris(isopropyll)silyl]oxy]-20-methyl-pregn-4-en-3-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 486.84 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C31H54O2Si |
| Molecular Weight | 486.84 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Recommended Standards
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