1,5-Dimethyl-2,4-bis[2-(trimethylsilyl)ethynyl]benzene CAS 1379822-08-8
| CAS No. | 1379822-08-8 |
| Molecular Formula | C18H26Si2 |
| Molecular Weight | 298.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,5-Dimethyl-2,4-bis[2-(trimethylsilyl)ethynyl]benzene (CAS 1379822-08-8) is a high-purity analytical reference standard with the molecular formula C18H26Si2 and a molecular weight of 298.57 g/mol.
1,5-Dimethyl-2,4-bis[2-(trimethylsilyl)ethynyl]benzene (C18H26Si2) contains an aromatic ring system. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 1,5-Dimethyl-2,4-bis[2-(trimethylsilyl)ethynyl]benzene 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 | C18H26Si2 |
| Molecular Weight | 298.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
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