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211567-40-7

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211567-40-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 211567-40-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,5,6 and 7 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 211567-40:
(8*2)+(7*1)+(6*1)+(5*5)+(4*6)+(3*7)+(2*4)+(1*0)=107
107 % 10 = 7
So 211567-40-7 is a valid CAS Registry Number.

211567-40-7Relevant articles and documents

Immonium Ion Based Synthetic Methodology: A Novel Method for the N-Methylation of Dipeptides and Amino Acid Derivatives via Retro Aza Diels-Alder Reactions

Grieco, Paul A.,Bahsas, Ali

, p. 5746 - 5749 (2007/10/02)

A novel method for the N-methylation of amino acid derivatives and dipeptides is detailed that features facile room-temperature retro Diels-Alder reactions of N-substituted 2-azanorbornenes with trapping of the incipient immonium ion with triethylsilane/trifluoroacetic acid.

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