Cas 111934-25-9,L-Serine, N-methyl-, methyl ester, trifluoroacetate (salt)

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Check Digit Verification of cas no

The CAS Registry Mumber 111934-25-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,9,3 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 111934-25:
(8*1)+(7*1)+(6*1)+(5*9)+(4*3)+(3*4)+(2*2)+(1*5)=99
99 % 10 = 9
So 111934-25-9 is a valid CAS Registry Number.

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111934-25-9Relevant academic research and scientific papers

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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