Cas 80221-20-1,1-(2-cyclopentenylethynyl)cyclohex-1-ene

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Check Digit Verification of cas no

The CAS Registry Mumber 80221-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,2,2 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 80221-20:
(7*8)+(6*0)+(5*2)+(4*2)+(3*1)+(2*2)+(1*0)=81
81 % 10 = 1
So 80221-20-1 is a valid CAS Registry Number.

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80221-20-1Relevant academic research and scientific papers

Double dehydro-diels-alder reactions of 1,5-dien-3-ynes

Fallon, Thomas,Robinson, Diane E.J.E.,Willis, Anthony C.,Paddon-Row, Michael N.,Sherburn, Michael S.

, p. 760 - 765 (2010)

A study was conducted to demonstrate double dehydro-diels-alder reactions of 1,5-dien-3-ynes. It was demonstrated that the reaction proceeded through two concerted cycloadditions, the first of which was proposed to be reversible. Detailed analysis reveale

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