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18519-26-1

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18519-26-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18519-26-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,5,1 and 9 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 18519-26:
(7*1)+(6*8)+(5*5)+(4*1)+(3*9)+(2*2)+(1*6)=121
121 % 10 = 1
So 18519-26-1 is a valid CAS Registry Number.

18519-26-1Downstream Products

18519-26-1Relevant articles and documents

Synthesis and properties of bis(2,5-dimethylpyrrolo[3,4-d])tetrathiafulvalenes, a class of annelated tetrathiafulvalene derivatives with excellent electron donor properties

Zong, Kyukwan,Chen, Wha,Cava, Michael P.,Rogers, Robin D.

, p. 8117 - 8124 (2007/10/03)

The synthesis of the first derivatives of bis(pyrrolo[3,4-d])tetrathiafulvalene has been studied in detail. Starting from the readily available 2,5-dimethylpyrrole (11) and N-phenyl-2,5-dimethylpyrrole, bis(2,5-dimethylpyrrolo[3,4-d])tetrathiafulvalene (8) and the N,N'-disubstituted derivatives 6, 7, 9, and 10 were prepared in good yields by practical procedures. In contrast to the other types of aromatic annelated tetrathiafulvalenes (TTFs), which have appreciably higher oxidation potentials than TTF, the redox behavior of the pyrrolo tetrathiafulvalenes (TTFs) is very close to that of TTF itself. The potential of pyrrolotetrathiafulvalenes as a new series of organic metal building blocks is shown by the two-probe conductivities of the tetracyanoquinodimethane (TCNQ) complexes of the N-phenyl compound 7 and the N-methyl compound 9, which give higher values than TTF-TCNQ under similar conditions.

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