| CAS No. | 1704065-48-4 |
| Molecular Formula | C18H27BrF3NO4SSi |
| Molecular Weight | 518.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
1-((5-Bromo-2-(trifluoromethoxy)phenyl)sulfonyl)-4-((tert-butyldimethylsilyl)oxy)piperidine (CAS 1704065-48-4) is a high-purity analytical reference standard with the molecular formula C18H27BrF3NO4SSi and a molecular weight of 518.46 g/mol.
1-((5-Bromo-2-(trifluoromethoxy)phenyl)sulfonyl)-4-((tert-butyldimethylsilyl)oxy)piperidine (C18H27BrF3NO4SSi) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/bromine 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
| Molecular Formula | C18H27BrF3NO4SSi |
| Molecular Weight | 518.46 g/mol |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |