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9-Phenylcarbamoyl-nona-2,8-diynoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

204014-43-7

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204014-43-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 204014-43-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,0,1 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 204014-43:
(8*2)+(7*0)+(6*4)+(5*0)+(4*1)+(3*4)+(2*4)+(1*3)=67
67 % 10 = 7
So 204014-43-7 is a valid CAS Registry Number.

204014-43-7Downstream Products

204014-43-7Relevant academic research and scientific papers

A short synthesis of conjugated unsaturated alcohols

Kazmaier, Uli

, p. 1491 - 1496 (1998)

Isomerization of acetylenic pentafluorophenyl esters in the presence of phosphines gives rise to activated dienoic esters, which can be reduced directly in a simple one pot procedure to the corresponding conjugated unsaturated alcohols 6-10. The higher reactivity of the pentafluorophenyl esters in comparison to alkyl esters allows their selective isomerization.

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