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817621-48-0

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817621-48-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 817621-48-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,7,6,2 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 817621-48:
(8*8)+(7*1)+(6*7)+(5*6)+(4*2)+(3*1)+(2*4)+(1*8)=170
170 % 10 = 0
So 817621-48-0 is a valid CAS Registry Number.

817621-48-0Relevant articles and documents

Synthesis of new N-aryl oxindoles as intermediates for pharmacologically active compounds

Acemoglu, Murat,Allmendinger, Thomas,Calienni, John,Cercus, Jacques,Loiseleur, Olivier,Sedelmeier, Gottfried H.,Xu, David

, p. 11571 - 11586 (2004)

Various new N-aryl oxindoles were synthesized as intermediates for the preparation of pharmacologically active 2-(N-arylamino)-phenylacetic acids. Two novel approaches were explored for the construction of diarylamine and N-aryl oxindole core structures, in addition to Buchwald-arylamination and Smiles rearrangement. Condensation of anilines with 2-oxo-cyclohexylidene-acetic acid derivatives and subsequent dehydrogenation is a new and viable method for the preparation of N-aryl oxindoles. Graphical Abstract.

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