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methyl (2E,4E)-4-methyl-5-(p-tolyl)penta-2,4-dienoate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

56138-44-4

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56138-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56138-44-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,1,3 and 8 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 56138-44:
(7*5)+(6*6)+(5*1)+(4*3)+(3*8)+(2*4)+(1*4)=124
124 % 10 = 4
So 56138-44-4 is a valid CAS Registry Number.

56138-44-4Downstream Products

56138-44-4Relevant academic research and scientific papers

Synthesis of 4-methyldienoates using a vinylogous horner-wadsworth-emmons reagent. application to the synthesis of trichostatic acid

Markiewicz, John T.,Schauer, Douglas J.,Loefstedt, Joakim,Corden, Steven J.,Wiest, Olaf,Helquist, Paul

supporting information; experimental part, p. 2061 - 2064 (2010/06/16)

Chemical Equation Presented The utility of the unsaturated phosphonate 1 as a vinylogous Horner-Wadsworth-Emmons reagent was explored in reactions with, aldehydes affording 4-methyldienoate esters. Factors that affect E/Z selectivity were studied. A simplified synthesis of trichostatic acid 3 was accomplished, to demonstrate utility of this reagent.

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