(3-Chloro-2-methylpropyl)trimethoxysilane CAS 17256-27-8
| CAS No. | 17256-27-8 |
| Molecular Formula | C7H17ClO3Si |
| Molecular Weight | 212.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(3-Chloro-2-methylpropyl)trimethoxysilane (CAS 17256-27-8), molecular formula C7H17ClO3Si and molecular weight 212.75 g/mol, is a CATO reference standard with documented purity and traceability.
(3-Chloro-2-methylpropyl)trimethoxysilane (C7H17ClO3Si) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, 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. 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 | C7H17ClO3Si |
| Molecular Weight | 212.75 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, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | -1.0 |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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Recommended Standards
- (Chloromethyl)triethoxysilane (CAS 15267-95-5)
- (4-Chlorophenyl)(trimethylsilyl)methanone (CAS 75748-10-6)
- 1-((2R,4S,5R)-4-Hydroxy-5-trityloxymethyl-tetrahydro-furan-2-yl)-5-methyl-1H-pyrimidine-2,4-dione 1-Octanesulfonyl chloride 7795-95-1 (CAS 7795-95-1)
- Octane-2-sulfonyl chloride (CAS 75391-49-0)
- Methyl 2-(4-chlorophenyl)acetimidate hydrochloride (CAS 39739-54-3)
- Diethyl 2-[[[3-(2,6-Dimethylpyridin-4-yl-4-Fluorophenyl]Amino]Methylidene]Propanedioate (CAS 104431-74-5)
- CAS 2230788-65-3 (CAS 2230788-65-3)
- 2-(2-Aminopropyl)pyrimidin-4-amine (CAS 1341724-00-2)
- (2-(Thiophen-2-yl)pyrimidin-4-yl)methanamine (CAS 1343069-92-0)
- 2,5-Di-tert-butoxy-4-cyclopropoxypyridine (CAS 1243446-05-0)
- Ethyl 5-acetyl-3,4-dimethylthieno[2,3-b]thiophene-2-carboxylate (CAS 555154-25-1)
- Ethyl 4-Hydroxy-8-(trifluoromethyl)-3-quinolinecarboxylate (CAS 23851-84-5)
- 2-Fluoro-5-(methoxymethyl)benzoic acid (CAS 1697993-35-3)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
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