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55927-20-3

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55927-20-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55927-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,9,2 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 55927-20:
(7*5)+(6*5)+(5*9)+(4*2)+(3*7)+(2*2)+(1*0)=143
143 % 10 = 3
So 55927-20-3 is a valid CAS Registry Number.

55927-20-3Upstream product

55927-20-3Downstream Products

55927-20-3Relevant academic research and scientific papers

Trans-substitution and equilibration of phenols. Part IV. The influence of various catalysts on the trans-tert-butylation reaction of phenols; mechanistic aspects

Willemse, F. R. J.,Kooyman, E. C.,Lamoen, H. B. van,Vos, D. de,Wolters, J.

, p. 206 - 209 (2007/10/02)

The trans-tert-butylation reaction by 2,6-di-tert-butyl-4-methylphenol has been studied for a number of phenols in the presence of different catalysts.Equilibria, as well as reaction kinetics, have been investigated.The mechanism involves the intermediacy of a tert-butyl ether.This mechanism is supported both by the kinetics and the initially high ortho/para ratio as well as by the reversed substituent effect.

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