9,9-Diphenylfluorene CAS 20302-14-1

Purity 97%+In StockPharmaceutical Standards
CAS No.20302-14-1
Molecular FormulaC25H18
Molecular Weight318.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

9,9-Diphenylfluorene CAS 20302-14-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 318.41 g/mol gives 9,9-Diphenylfluorene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 9,9-Diphenylfluorene (CAS 20302-14-1), a certified reference material (molecular formula C25H18, MW 318.41 g/mol) for analytical method development and quality control.

9,9-Diphenylfluorene (C25H18) contains a polycyclic aromatic 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 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).

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC25H18
Molecular Weight318.41 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)17.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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