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83128-58-9

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83128-58-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83128-58-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,1,2 and 8 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 83128-58:
(7*8)+(6*3)+(5*1)+(4*2)+(3*8)+(2*5)+(1*8)=129
129 % 10 = 9
So 83128-58-9 is a valid CAS Registry Number.

83128-58-9Relevant articles and documents

Derivatives of Barbituric Acid, XXX: Synthesis of Racemic and Optically Active Barbituric Acids Carrying Basic Substituents

Knabe, Joachim,Reinhardt, Joerg

, p. 706 - 716 (1982)

Monoalkylated malonates were condensed with N-monosubstituted ureas to yield the 5-monosubstituted barbituric acids 1, which were reacted to the 5-bromobarbituric acids 2.From 2 the barbituric acids 3-5 having basic substituents were obtained by nucleophi

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