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123542-20-1

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123542-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123542-20-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,5,4 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 123542-20:
(8*1)+(7*2)+(6*3)+(5*5)+(4*4)+(3*2)+(2*2)+(1*0)=91
91 % 10 = 1
So 123542-20-1 is a valid CAS Registry Number.

123542-20-1Relevant articles and documents

Studies on the Chemistry of Isoindoles and Isoindolenines, XXXVI. - Reactions of 2-Alkyl-2H-isoindoles with Maleic Imides

Kreher, Richard P.,Seubert, Juergen,Schmitt, Dieter,Use, Goetz,Kohl, Norbert,Muleta, Tilahun

, p. 381 - 390 (2007/10/02)

2-Alkyl-2H-isoindoles 2 react with maleic imides 4 exclusively in position 1 and 3 by cycloaddition to form Diels-Alder adducts.The transformation of the endo isomers 6 into the thermodynamically more stable exo isomers 7 depends on the dienophile.The cyc

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