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143191-52-0

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143191-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143191-52-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,1,9 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 143191-52:
(8*1)+(7*4)+(6*3)+(5*1)+(4*9)+(3*1)+(2*5)+(1*2)=110
110 % 10 = 0
So 143191-52-0 is a valid CAS Registry Number.

143191-52-0Relevant articles and documents

A novel electrophilic methoxylation (with a little help from F2)

Rozen, Shlomo,Mishani, Eyal,Kol, Moshe

, p. 7643 - 7645 (2007/10/02)

Methyl hypofluorite, MeOF, easily made from MeOH and F2, proved to be an excellent source for the novel electrophilic methoxylium ion "MeO+". MeOF was reacted with the enol forms of carbonyls, producing in good to excellent yields the corresponding α-methoxy carbonyl derivatives. It was found that the methoxylation is best carried out on methyl enol ethers. Silyl enol ethers and enol acetates were also tested but with limited success. The reaction proceeds through an addition elimination mechanism.

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