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823221-48-3

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823221-48-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 823221-48-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,2,3,2,2 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 823221-48:
(8*8)+(7*2)+(6*3)+(5*2)+(4*2)+(3*1)+(2*4)+(1*8)=133
133 % 10 = 3
So 823221-48-3 is a valid CAS Registry Number.

823221-48-3Downstream Products

823221-48-3Relevant articles and documents

6-Aminouracils as precursors for the syntheses of fused di- and tricyclic

Youssif, Shaker

, p. 341 - 343 (2007/10/03)

The treatment of 1-benzyl-, or 1-methyl-6-chlorouracil (1a,b) with nucleophilic primary amines followed by nitrosation, reduction, formylation and dehydro-cyclisation lead to xanthines 5 and 7. While, the treatment of uracil 8 with aromatic aldehydes 9a-f leads to the formation of dipyrimidinopyridines 10a-f, reaction with formalin and primary amines gives pyrimidopyrimidines 11a-d via double Michael reactions.

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