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Propanedioic acid, (1-methylpentylidene)-, diethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

201940-71-8

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201940-71-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 201940-71-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,9,4 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 201940-71:
(8*2)+(7*0)+(6*1)+(5*9)+(4*4)+(3*0)+(2*7)+(1*1)=98
98 % 10 = 8
So 201940-71-8 is a valid CAS Registry Number.

201940-71-8Downstream Products

201940-71-8Relevant academic research and scientific papers

Reactions of diethyl dibromomalonate and ethyl 2,2-dichloroacetoacetate with water and carbonyl compounds (aldehydes and ketones) in the presence of pentacarbonyliron

Terent'ev,Vasil'eva,Mysova,Chakhovskaya

, p. 924 - 927 (2004)

Diethyl dibromomalonate and ethyl 2,2-dichloroacetoacetate are effectively reduced with the system pentacarbonyliron-proton-donor compound (water or butyl methyl ketone) to give the corresponding hydrodehalogenation products. These results provide a support for the previous assumption that the key reaction stage is reduction with pentacarbonyliron of initially formed radical to anion which is then involved in proton transfer.

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