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115512-68-0

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115512-68-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 115512-68-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,5,5,1 and 2 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 115512-68:
(8*1)+(7*1)+(6*5)+(5*5)+(4*1)+(3*2)+(2*6)+(1*8)=100
100 % 10 = 0
So 115512-68-0 is a valid CAS Registry Number.

115512-68-0Relevant articles and documents

The enantioselective Birch-Cope sequence for the synthesis of carbocyclic quaternary stereocenters. Application to the synthesis of (+)-mesembrine

Paul, Tapas,Malachowski, William P.,Lee, Jisun

, p. 4007 - 4010 (2007/10/03)

A synthetic technique for generating carbocyclic quaternary stereocenters with exceptionally high levels of enantioselectivity is described. A sequence of three reactions, enantioselective Birch reduction-allylation, enol ether hydrolysis, and Cope rearrangement, is used to stereoselectively generate chiral quaternary centers on a 2-cyclohexen-1-one ring. The products of the sequence are 4,4-disubstituted-2-carboxamide-2-cyclohexen-1-one structures which are versatile intermediates in complex natural product synthesis. An application of the sequence to the synthesis of (+)-mesembrine illustrates the utility of these intermediates.

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