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189999-82-4

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189999-82-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 189999-82-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,9,9 and 9 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 189999-82:
(8*1)+(7*8)+(6*9)+(5*9)+(4*9)+(3*9)+(2*8)+(1*2)=244
244 % 10 = 4
So 189999-82-4 is a valid CAS Registry Number.

189999-82-4Downstream Products

189999-82-4Relevant articles and documents

Hexaaminobenzene derivatives: Synthesis and unusual oxidation behavior

Wolff,Zietsch,Nuber,Gredel,Speiser,Wuerde

, p. 2769 - 2777 (2007/10/03)

The syntheses and the electrochemical behavior of the monomeric peralkylated hexaamino(1,3)-metacyclophane 4, the dimeric dodecaamino(1,3)cyclophane 5a, and the dodecaamino(1,3,5)-cyclophane 6 are described. Electrochemical measurements show that the hexaaminobenzene units in 4 and 5a undergo an. unusually slow two-electron transfer attributed to the deformation of the rings into bis-cyanine cations when oxidized to the respective dication. Further oxidations to tri-, tetra-, and hexacationic units occur at more positive potentials. In the dimeric structures, no interaction between the rings can be seen in the (1,3)cyclophane, but strong interaction for the (1,3,5)cyclophane is observed.

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