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224635-68-1

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224635-68-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 224635-68-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,4,6,3 and 5 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 224635-68:
(8*2)+(7*2)+(6*4)+(5*6)+(4*3)+(3*5)+(2*6)+(1*8)=131
131 % 10 = 1
So 224635-68-1 is a valid CAS Registry Number.

224635-68-1Relevant articles and documents

Synthesis of 5-hydroxyoxaindan-2-ones and indol-5-ols from 1,4- cyclohexanedione

Ozaki, Yutaka,Quan, Zhe-Shan,Watabe, Kyouko,Kim, Sang-Won

, p. 727 - 731 (2007/10/03)

1,4-Cyclohexanedione reacted with 2-oxocarboxylic acids to give 5- hydroxyoxaindan-2-ones including homogentisic lactone in one pot. The obtained aromatic compounds were transformed into indol-5-ols in a few steps. The sequential reactions showed a significance of 1,4-cyclohexanedione as a starting material in aromatic synthesis and an alternative access to the indol-5-ols.

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