(3S,4R,5R)-4-[(tert-butyldimethylsilyl)oxy]-3-chloro-3-fluoro-5-(hydroxymethyl)oxolan-2-one CAS 2095619-41-1
| CAS No. | 2095619-41-1 |
| Molecular Formula | C11H20ClFO4Si |
| Molecular Weight | 298.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (3S,4R,5R)-4-[(tert-butyldimethylsilyl)oxy]-3-chloro-3-fluoro-5-(hydroxymethyl)oxolan-2-one.
(3S,4R,5R)-4-[(tert-butyldimethylsilyl)oxy]-3-chloro-3-fluoro-5-(hydroxymethyl)oxolan-2-one (CAS 2095619-41-1), molecular formula C11H20ClFO4Si and molecular weight 298.81 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, (3S,4R,5R)-4-[(tert-butyldimethylsilyl)oxy]-3-chloro-3-fluoro-5-(hydroxymethyl)oxolan-2-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 298.81 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C11H20ClFO4Si |
| Molecular Weight | 298.81 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F/Cl-containing |
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