1,1',1'',1'''-Silanetetrayltetrakis[4-bromobenzene] CAS 18733-98-7

Purity 97%+In StockPharmaceutical Standards
CAS No.18733-98-7
Molecular FormulaC24H16Br4Si
Molecular Weight652.09 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,1',1'',1'''-Silanetetrayltetrakis[4-bromobenzene] CAS 18733-98-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 652.09 g/mol gives 1,1',1'',1'''-Silanetetrayltetrakis[4-bromobenzene] distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1,1',1'',1'''-Silanetetrayltetrakis[4-bromobenzene] (CAS 18733-98-7), molecular formula C24H16Br4Si and molecular weight 652.09 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to bromine substitution, a polycyclic aromatic system, 1,1',1'',1'''-Silanetetrayltetrakis[4-bromobenzene] is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 652.09 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.

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), 1,1',1'',1'''-Silanetetrayltetrakis[4-bromobenzene] 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 FormulaC24H16Br4Si
Molecular Weight652.09 g/mol
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)15.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962
Halogen ContentBr-containing

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