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92255-59-9

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92255-59-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 92255-59-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,2,5 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 92255-59:
(7*9)+(6*2)+(5*2)+(4*5)+(3*5)+(2*5)+(1*9)=139
139 % 10 = 9
So 92255-59-9 is a valid CAS Registry Number.

92255-59-9Relevant articles and documents

An easy route to N,N-diarylhydrazines by Cu-catalyzed arylation of pyridine-2-carbaldehyde hydrazones with aryl halides

Wu, Wei,Li, Xin-Le,Fan, Xin-Heng,Yang, Lian-Ming

, p. 862 - 867 (2013/03/28)

A copper-catalyzed C-N coupling reaction is described for the preparation of pyridine-2-carbaldehyde N,N-diarylhydrazones by the arylation of N-mono- or -non-substituted hydrazones with aryl bromides/iodides, and the subsequent conversion of the hydrazones into N,N-diarylhydrazines by a transimination process with an aqueous solution of H2NNH2. The reaction features the use of CuI as the catalyst without the need for external ligands. This methodology provides a convenient alternative to the synthesis of structurally diverse N,N-diarylhydrazines from simple, easily accessible precursors. Copyright

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