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1227811-15-5

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1227811-15-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1227811-15-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,7,8,1 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1227811-15:
(9*1)+(8*2)+(7*2)+(6*7)+(5*8)+(4*1)+(3*1)+(2*1)+(1*5)=135
135 % 10 = 5
So 1227811-15-5 is a valid CAS Registry Number.

1227811-15-5Relevant articles and documents

Synthesis of C -propargylic esters of N-protected amino acids and peptides

Bew, Sean P.,Hiatt-Gipson, Glyn D.

supporting information; experimental part, p. 3897 - 3899 (2010/07/05)

Figure presented Recent years have seen a huge surge of interest in the application of alkyne-derived motifs for so-called click chemistry. Given the critical importance of amino acids in organic synthesis as well as their myriad of applications in click chemistry it is interesting to note that the synthesis of C-propargyl derived amino acid esters has not been particularly well served. We report a convenient, straightforward, and high-yielding synthesis of structurally diverse C-propargyl-derived N-protected amino acid esters.

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