3-(Chloromethyl)-1,1,1,3,5,5,5-heptamethyltrisiloxane CAS 17201-87-5
| CAS No. | 17201-87-5 |
| Molecular Formula | C8H23ClO2Si3 |
| Molecular Weight | 270.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(Chloromethyl)-1,1,1,3,5,5,5-heptamethyltrisiloxane (CAS 17201-87-5) is a high-purity analytical reference standard with the molecular formula C8H23ClO2Si3 and a molecular weight of 270.98 g/mol.
Based on its molecular formula C8H23ClO2Si3, 3-(Chloromethyl)-1,1,1,3,5,5,5-heptamethyltrisiloxane contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 270.98 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 3-(Chloromethyl)-1,1,1,3,5,5,5-heptamethyltrisiloxane 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 | C8H23ClO2Si3 |
| Molecular Weight | 270.98 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | -3.0 |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- Cabraleahydroxylactone acetate (CAS 35833-70-6)
- 6-Chlorobenzo[d][1,3]dioxole-5-carbaldehyde (CAS 15952-61-1)
- 4-Bromo-2-chloro-n-methylaniline (CAS 944131-95-7)
- Avibactam Impurity 40 (CAS CATO-C4X-134840)
- 3-Bromo-9,9'-spirobi[fluorene] (CAS 1361227-58-8)
- Crisaborole-d4 (CAS CATO-C4X-202134)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
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