(2a,3a,5a,17beta)-2,17-Dimethylandrostane-3,17-diol CAS 1173998-58-7
| CAS No. | 1173998-58-7 |
| Molecular Formula | C21H36O2 |
| Molecular Weight | 320.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (2a,3a,5a,17beta)-2,17-Dimethylandrostane-3,17-diol is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(2a,3a,5a,17beta)-2,17-Dimethylandrostane-3,17-diol (CAS 1173998-58-7), molecular formula C21H36O2 and molecular weight 320.51 g/mol, is a CATO reference standard with documented purity and traceability.
(2a,3a,5a,17beta)-2,17-Dimethylandrostane-3,17-diol (C21H36O2) 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.
As a certified reference material (CRM), (2a,3a,5a,17beta)-2,17-Dimethylandrostane-3,17-diol 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 | C21H36O2 |
| Molecular Weight | 320.51 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
Recommended Standards
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