((4-Ethynylphenyl)ethynyl)triisopropylsilane CAS 175345-90-1
| CAS No. | 175345-90-1 |
| Molecular Formula | C19H26Si |
| Molecular Weight | 282.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of ((4-Ethynylphenyl)ethynyl)triisopropylsilane is closely related to a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
((4-Ethynylphenyl)ethynyl)triisopropylsilane (CAS 175345-90-1), molecular formula C19H26Si and molecular weight 282.50 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a polycyclic aromatic system, ((4-Ethynylphenyl)ethynyl)triisopropylsilane is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 282.50 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), ((4-Ethynylphenyl)ethynyl)triisopropylsilane 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 | C19H26Si |
| Molecular Weight | 282.50 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
Related Ethynylphenyl Standards
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