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225656-31-5

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225656-31-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 225656-31-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,5,6,5 and 6 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 225656-31:
(8*2)+(7*2)+(6*5)+(5*6)+(4*5)+(3*6)+(2*3)+(1*1)=135
135 % 10 = 5
So 225656-31-5 is a valid CAS Registry Number.

225656-31-5Upstream product

225656-31-5Downstream Products

225656-31-5Relevant articles and documents

Synthesis of enantiopure functionalized pipecolic acids via amino acid derived N-acyliminium ions

Rutjes, Floris P. J. T.,Veerman, Johan J. N.,Meester, Wim J. N.,Hiemstra, Henk,Schoemaker, Hans E.

, p. 1127 - 1135 (2007/10/03)

The synthesis and enzymatic resolution of a novel vinylsilane-containing amino acid is described. Derivatization of this and other olefinic amino acids followed by subjection to standard N-acyliminium ion cyclization conditions provides the corresponding pipecolic acid derivatives with - in most cases - complete conservation of enantiopurity. In addition to studying the scope of this reaction, details of the N-acyliminium ion cyclization including an aza Cope equilibrium are highlighted.

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