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Methylium, bis(4-fluorophenyl)phenyl- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

20732-34-7

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20732-34-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20732-34-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,3 and 2 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 20732-34:
(7*2)+(6*0)+(5*7)+(4*3)+(3*2)+(2*3)+(1*4)=77
77 % 10 = 7
So 20732-34-7 is a valid CAS Registry Number.

20732-34-7Relevant academic research and scientific papers

The Effect of Both ?-Donor Substituents and Acid Media on the Formation of Trityl Cations, Studied by Relaxation Methods and NMR-Spectroscopy

Blumenstock, H.,Dickert, F.,Fackler, H.,Hammerschmidt, A.

, p. 157 - 170 (2007/10/02)

Trityl trifluoroacetates were taken to study why ion formation from ionogens is favoured by acid media.From relaxation measurements, NMR-spectroscopy and conductivity studies it was found that this effect is due to anion solvation by acid, namely a specific solvation of the free anions and a statistical solvation of the anions bound in the ionogen.This leads to a drastically reduced ion recombination rate constant even at low concentrations of acid and an increased dissociation rate constant at rather high concentrations of acid. -.Keywords: Kinetics/ Ion solvation/ Carbenium ions/ NMR-spectroscopy

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