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119867-92-4

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119867-92-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 119867-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,8,6 and 7 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 119867-92:
(8*1)+(7*1)+(6*9)+(5*8)+(4*6)+(3*7)+(2*9)+(1*2)=174
174 % 10 = 4
So 119867-92-4 is a valid CAS Registry Number.

119867-92-4Relevant articles and documents

REARRANGEMENTS OF AROMATIC CARBONYL ARYLHYDRAZONES OF BENZENE, NAPHTHALENE, AND AZULENE

Benincori, Tiziana,Pagani, Silvia Bradamante,Fusco, Raffaello,Sannicolo, Franco

, p. 2721 - 2728 (2007/10/02)

Aromatic carbonyl arylhydrazones have been shown to undergo two kinds of rearrangement in polyphosphoric acid both involving nitrogen-nitrogen bond cleavage.The first proceeds via insertion of the imine portion in the position ortho to the second nitrogen atom to give o-phenylenediamine intermediates: their evolution depends on the nature of the starting substrate.This reaction has been employed for synthesizing the quinoxalines (5) and the phenanthridines (11), and was demonstrated to be intramolecular.The second reaction path is a sigmatropic rearrangment exclusive to electron-rich aromatic carbonyl hydrazones.

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