| CAS No. | 7087-21-0 |
| Molecular Formula | C12H32O3Si4 |
| Molecular Weight | 336.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
3-Allyl-1,1,1,5,5,5-hexamethyl-3-((trimethylsilyl)oxy)trisiloxane (CAS 7087-21-0) is a high-purity analytical reference standard with the molecular formula C12H32O3Si4 and a molecular weight of 336.72 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 3-Allyl-1,1,1,5,5,5-hexamethyl-3-((trimethylsilyl)oxy)trisiloxane is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 336.72 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 3-Allyl-1,1,1,5,5,5-hexamethyl-3-((trimethylsilyl)oxy)trisiloxane 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.
| Molecular Formula | C12H32O3Si4 |
| Molecular Weight | 336.72 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | -3.0 |
| CAS Registry Year (est.) | 1959 |