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2-Butenoic acid, 2-acetyl-3-phenyl-, ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

18905-76-5

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18905-76-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18905-76-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,0 and 5 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 18905-76:
(7*1)+(6*8)+(5*9)+(4*0)+(3*5)+(2*7)+(1*6)=135
135 % 10 = 5
So 18905-76-5 is a valid CAS Registry Number.

18905-76-5Downstream Products

18905-76-5Relevant academic research and scientific papers

Indium (III) mediated Markovnikov addition of malonates and β-ketoesters to terminal alkynes and the formation of Knoevenagel condensation products

Zhang, Ji,Blazecka, Peter G.,Angell, Paul,Lovdahl, Mark,Curran, Timothy T.

, p. 7807 - 7813 (2005)

The indium(III) triflate mediated addition of active methylene compounds to terminal alkynes has been expanded to use malonates and low boiling terminal alkynes to form the Markovnikov addition products. Indium(III) chloride and indium(III) bromide were also found to be efficient catalysts. Knoevenagel condensation products were isolated when reactions involved a simple malonate or β-ketoester.

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