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2-Butenoic acid, 4-methoxy-4-phenyl-, ethyl ester, (2E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

254756-01-9

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254756-01-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 254756-01-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,7,5 and 6 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 254756-01:
(8*2)+(7*5)+(6*4)+(5*7)+(4*5)+(3*6)+(2*0)+(1*1)=149
149 % 10 = 9
So 254756-01-9 is a valid CAS Registry Number.

254756-01-9Relevant academic research and scientific papers

A highly diastereoselective [2,3]-sigmatropic N,O rearrangement

Bull, Steven D.,Davies, Stephen G.,Jones, Simon,Ouzman, Jacqueline V. A.,Price, Anne J.,Watkin, David J.

, p. 2079 - 2080 (1999)

Lithium (E)-N-benzyl-O-(4-methoxy-4-phenylbut-2-enyl)-hydroxylamide undergoes a highly diastereoselective rearrangement via a chelated transition state, to afford after reduction, syn-3-benzylamino-4-methoxy-4-phenylbut-1-ene as a single diastereoisomer.

Diastereoselective [2,3]-sigmatropic rearrangements of lithium N-benzyl-O-allylhydroxylamides bearing a stereogenic centre adjacent to the migration terminus

Bull, Steven D.,Davies, Stephen G.,Domingez, Sara Hernandez,Jones, Simon,Price, Anne J.,Sellers, Thomas G.R.,Smith, Andrew D.

, p. 2141 - 2150 (2007/10/03)

The diastereoselective [2,3]-sigmatropic rearrangements of lithium N-benzyl-O-allylhydroxylamides bearing a stereogenic centre adjacent to the migration terminus are examined. (E)-N-Benzyl-O(4-phenylpent-2-enyl)hydroxylamine rearranges in 30% de to afford

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