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477855-68-8

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477855-68-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 477855-68-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,7,8,5 and 5 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 477855-68:
(8*4)+(7*7)+(6*7)+(5*8)+(4*5)+(3*5)+(2*6)+(1*8)=218
218 % 10 = 8
So 477855-68-8 is a valid CAS Registry Number.

477855-68-8Relevant articles and documents

Synthesis and characterization of some heterocyclic analogues of N,N′-perarylated phenylene-1,4-diamines and benzidines as a new class of hole transport materials

Schumann, Joerg,Kanitz, Andreas,Hartmann, Horst

, p. 1268 - 1276 (2002)

Starting from N,N-diarylsubstituted thioureas 20 and thioacetamides 21 a series of heterocyclic analogous of N,N′-perarylated phenylene-1,4-diamines and benzidines was obtained. These compounds represent, as studied by DSC measurements, a new class of hole transporting materials with high thermal stability and high tendency to form stable amorphous states. Moreover, some of the new compounds are, as measured by cyclic voltammetry, easily reversibly oxidized indicating the formation of persistent radical ions. Such compounds, which are, in general, completely substituted by aryl groups at their heterocyclic moieties, have been successfully used as hole-transport materials in OLEDs.

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