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159497-65-1

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159497-65-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159497-65-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,4,9 and 7 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 159497-65:
(8*1)+(7*5)+(6*9)+(5*4)+(4*9)+(3*7)+(2*6)+(1*5)=191
191 % 10 = 1
So 159497-65-1 is a valid CAS Registry Number.

159497-65-1Relevant articles and documents

Chemo- and regioselective syntheses of enantiopure aminopyrrolidinones as building blocks for constrained peptidomimetics

Lehmann, Thomas,Michel, Dorothee,Glaenzel, Markus,Waibel, Reiner,Gmeiner, Peter

, p. 1389 - 1400 (2007/10/03)

Starting from natural asparagine the synthesis of the N-protected enantiomerically pure 3- and 4-aminopyrrolidinones (1) and (3) was accomplished. The incorporation of these building blocks into conformationally constrained peptidomimetics was demonstrated by the synthesis of the potential dopamine receptor modulator (14b) (β-PAOPA). Furthermore, Freidinger γ-lactams including the protected dipeptide mimetics (8a-c) and (9) were prepared. The optical integrity of the synthesis was established by NMR analysis of the ureas (10a,b).

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