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125228-47-9

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125228-47-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 125228-47-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,2,2 and 8 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 125228-47:
(8*1)+(7*2)+(6*5)+(5*2)+(4*2)+(3*8)+(2*4)+(1*7)=109
109 % 10 = 9
So 125228-47-9 is a valid CAS Registry Number.

125228-47-9Downstream Products

125228-47-9Relevant articles and documents

Concise and stereoselective syntheses of the eight natural ant defense alkaloids (+)-tetraponerine-1 to (+)-tetraponerine-8 according to the CN(R,S) strategy

Yue, Chongwei,Gauthier, Isabelle,Royer, Jacques,Husson, Henri-Philippe

, p. 4949 - 4954 (2007/10/03)

The asymmetric syntheses of all the known defense alkaloids of the ant Tetraponera sp. tetraponerines T-1 to T-8 have been accomplished in five or six steps with 20-45% overall yields. The synthesis involved in the cross-condensation of (R)-piperidin-2-ylacetaldehyde with 4-aminobutyraldehyde which upon quenching by cyanide ion gave a stable tricyclic amino nitrile 3 with both a high yield and complete diastereoselectivity. This amino nitrile is the common precursor of four tetraponerines. A similar synthesis using (R)-pyrrolidine-2-ylacetaldehyde provided the tricyclic amino nitrile 2 precursor of the four other tetraponerines.

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