Diphenylbis(phenylethynyl)silane CAS 18784-61-7

Purity 97%+In StockPharmaceutical Standards
CAS No.18784-61-7
Molecular FormulaC28H20Si
Molecular Weight384.54 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Diphenylbis(phenylethynyl)silane CAS 18784-61-7 chemical structure

Description

Diphenylbis(phenylethynyl)silane (CAS 18784-61-7) is a high-purity analytical reference standard with the molecular formula C28H20Si and a molecular weight of 384.54 g/mol.

The molecular framework of Diphenylbis(phenylethynyl)silane (C28H20Si) is characterized by a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

As a certified reference material (CRM), Diphenylbis(phenylethynyl)silane 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 FormulaC28H20Si
Molecular Weight384.54 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)19.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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