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254427-95-7

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254427-95-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 254427-95-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,4,2 and 7 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 254427-95:
(8*2)+(7*5)+(6*4)+(5*4)+(4*2)+(3*7)+(2*9)+(1*5)=147
147 % 10 = 7
So 254427-95-7 is a valid CAS Registry Number.

254427-95-7Relevant articles and documents

Stereocontrolled synthesis and alkylation of cyclic β-amino esters: Asymmetric synthesis of a (-)-sparteine surrogate

Hermet, Jean-Paul R.,Viterisi, Aurelien,Wright, Jonathan M.,McGrath, Matthew J.,O'Brien, Peter,Whitwood, Adrian C.,Gilday, John

, p. 3614 - 3622 (2008/09/21)

A convenient method for the stereoselective synthesis of cyclic β-amino esters from an iodo αβ-unsaturated ester and α-methylbenzylamine is described. Subsequent enolate generation and alkylation proceeds with complete stereocontrol, with the two stereogenic centres working together. In this way, a functionalised piperidine suitable for alkaloid natural product synthesis was prepared. The usefulness of the methodology is exemplified with the concise synthesis of a (-)-sparteine surrogate. The Royal Society of Chemistry.

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