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851769-53-4

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851769-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 851769-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,1,7,6 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 851769-53:
(8*8)+(7*5)+(6*1)+(5*7)+(4*6)+(3*9)+(2*5)+(1*3)=204
204 % 10 = 4
So 851769-53-4 is a valid CAS Registry Number.

851769-53-4Relevant articles and documents

Stereoselective synthesis and rearrangement-fragmentation of arylidene N-alkoxydiketopiperazines

Liu, Shouxin,Mu, Yun,Han, Jianrong,Zhen, Xiaoli,Yang, Yihua,Tian, Xia,Whiting, Andrew

experimental part, p. 7476 - 7481 (2011/12/03)

A stereoselective synthesis of arylidene N-alkoxydiketopiperazines via oxime-ether formation and intramolecular acylation is described, followed by an acid-catalysed rearrangement-fragmentation to give novel diketopiperazine hemiaminal derivatives with us

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