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205648-32-4

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205648-32-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205648-32-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,6,4 and 8 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 205648-32:
(8*2)+(7*0)+(6*5)+(5*6)+(4*4)+(3*8)+(2*3)+(1*2)=124
124 % 10 = 4
So 205648-32-4 is a valid CAS Registry Number.

205648-32-4Relevant academic research and scientific papers

Strigol and sorgolactone synthetic studies use of Winferfeldt's template to control the C-2' configuration

Roehrig, Susanne,Hennig, Lothar,Findeisen, Matthias,Welzel, Peter,Mueller, Dietrich

, p. 5489 - 5492 (1997)

A route comprising (i) a cycloaddition reaction of citraconic anhydride with the Winterfeldt auxiliary, (ii) hydride reduction of the cycloadduct, (iii) a (formal) ether formation, and (iv) a cycloreversion reaction allows efficient stereocontrol at C-2' in the synthesis of strigol and its structural analogues.

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