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(E)-3-(4-oxo-5-phenylpentylidene)tetrahydro-2H-pyran-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

643754-28-3

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643754-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 643754-28-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,7,5 and 4 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 643754-28:
(8*6)+(7*4)+(6*3)+(5*7)+(4*5)+(3*4)+(2*2)+(1*8)=173
173 % 10 = 3
So 643754-28-3 is a valid CAS Registry Number.

643754-28-3Downstream Products

643754-28-3Relevant academic research and scientific papers

Switching between Novel Samarium(II)-Mediated Cyclizations by a Simple Change in Alcohol Cosolvent

Hutton, Thomas K.,Muir, Kenneth W.,Procter, David J.

, p. 4811 - 4814 (2007/10/03)

(Equation Presented) γ,δ-Unsaturated ketones undergo two very different stereoselective cyclization reactions mediated by samarium(II) iodide depending upon the alcohol cosolvent used in the reaction. Switching between an unprecedented aldol spirocyclizat

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