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91374-55-9

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91374-55-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91374-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,3,7 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91374-55:
(7*9)+(6*1)+(5*3)+(4*7)+(3*4)+(2*5)+(1*5)=139
139 % 10 = 9
So 91374-55-9 is a valid CAS Registry Number.

91374-55-9Downstream Products

91374-55-9Relevant articles and documents

C-ALKYLATION OF PHENOLS WITH METHYL VINYL KETONE IN THE PRESENCE OF BASES

Titova, T. F.,Krysin, A. P.,Shakirov, M. M.,Mamatyuk, V. I.

, p. 294 - 301 (2007/10/02)

The C-alkylation of phenols with methyl vinyl ketone in alcohols in the presence of alkali-metal alcoholates at -60 to +40 deg C was investigated by the PMR method.At -30 to 0 deg C methyl vinyl ketone reacts with primary alcohols with the formation of β-alkoxy-2-butanones, the subsequent reaction of which with 2,6-di-tert-butylphenol at 20-40 deg C by a mechanism of nucleophilic substitution leads to the formation of 4-(3,5-di-tert-butyl-4-hydroxyphenyl)-2-butanone.The composition of the products from the reaction of 2,6-di-tert-butylphenol with methyl vinyl ketone and β-methoxy-2-butanone was studied.

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