Octakis(trimethylsiloxy)silsesquioxane CAS 51777-38-9
| CAS No. | 51777-38-9 |
| Molecular Formula | C24H72O20Si16 |
| Molecular Weight | 1130.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 1130.18 g/mol gives Octakis(trimethylsiloxy)silsesquioxane distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Octakis(trimethylsiloxy)silsesquioxane (CAS 51777-38-9) is a high-purity analytical reference standard with the molecular formula C24H72O20Si16 and a molecular weight of 1130.18 g/mol.
Structurally, Octakis(trimethylsiloxy)silsesquioxane (C24H72O20Si16) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of -11.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 1130.18 g/mol, it falls into the high-molecular-weight range.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Octakis(trimethylsiloxy)silsesquioxane under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C24H72O20Si16 |
| Molecular Weight | 1130.18 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | -11.0 |
| CAS Registry Year (est.) | 1971 |
Related Octakis Standards
- PSS-Octakis[2-(Chlorodimethylsilyl)ethyl] substituted (CAS 243146-51-2)
- 1,3,5,7,9,11,13,15-Octakis(((2-(cyclohex-3-en-1-yl)ethyl)dimethylsilyl)oxy)-2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.13,9.15,15.17,13]icosane (CAS 136849-03-1)
- Octakis(tetramethylammonium)-t8-silsesquioxane (CAS 56982-91-3)
- Zinc 2,3,9,10,16,17,23,24-octakis(octyloxy)-29H,31H-phthalocyanine (CAS 261504-18-1)
- 69667-29-4 Octakis(tetramethylammonium) pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1,3,5,7,9,11,13,15-octakis(yloxide) hydrate PSS hydrate-Octakis(tetramethylammonium) substituted (CAS 69667-29-4)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
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