Cas 1128087-20-6,C21H18N2O

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Check Digit Verification of cas no

The CAS Registry Mumber 1128087-20-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,2,8,0,8 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1128087-20:
(9*1)+(8*1)+(7*2)+(6*8)+(5*0)+(4*8)+(3*7)+(2*2)+(1*0)=136
136 % 10 = 6
So 1128087-20-6 is a valid CAS Registry Number.

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1128087-20-6Relevant articles and documents

Stereoselective double friedel-crafts alkylation of indoles with divinyl ketones

Silvanus, Andrew C.,Heffernan, Stephen J.,Liptrot, David J.,Kociok-Koehn, Gabriele,Andrews, Benjamin I.,Carbery, David R.

, p. 1175 - 1178 (2009)

A tandem double Friedel-Crafts reaction of indoles and nonsymmetrical divinyl ketones has been achieved. The tandem reaction forms complex [6-5-7]-tricyclic indoles in excellent yields. The reaction is completely regioselective and offers high levels of s

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1128087-20-6