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56920-55-9

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56920-55-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56920-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,9,2 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 56920-55:
(7*5)+(6*6)+(5*9)+(4*2)+(3*0)+(2*5)+(1*5)=139
139 % 10 = 9
So 56920-55-9 is a valid CAS Registry Number.

56920-55-9Relevant articles and documents

The palladium-catalyzed preparation of condensed tetracyclic heterocycles and their application to the synthesis of rac-mangochinine

Vincze, Zoltan,Biro, A. Beatrix,Csekei, Marton,Timari, Geza,Kotschy, Andras

, p. 1375 - 1385 (2006)

Dihydroisoquinoline derivatives and their analogues, prepared by the Bischler-Napieralsky reaction, were converted to their indole-fused derivatives. Scope and limitations of the palladium-catalyzed reaction, proceeding through the tautomeric enamine forms of these compounds, were studied and the process was extended to the preparation of racemic mangochinine. Georg Thieme Verlag Stuttgart.

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