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109685-07-6

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109685-07-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109685-07-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,6,8 and 5 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109685-07:
(8*1)+(7*0)+(6*9)+(5*6)+(4*8)+(3*5)+(2*0)+(1*7)=146
146 % 10 = 6
So 109685-07-6 is a valid CAS Registry Number.

109685-07-6Relevant articles and documents

Metalation of Phenols. Synthesis of Benzoquinones by the Oxidative Degradation Approach

Saa, Jose M.,Llobera, Antonia,Garcia-Raso, Angel,Costa, Antonio,Deya, Pedro M.

, p. 4263 - 4273 (2007/10/02)

In a effort to explore the potential of so-called oxidative degradation approach for the synthesis of quinones, we have investigated the direct metalation of a number of simple phenols such as o- and p-hydroxybenzyl alcohols, benzyl methyl ethers and N,N-dimethylbenzylamines.Apparently, only those phenolic substrates having available both a coordinating group for chelation and an electron-withdrawing group in a 1,3-relationship are efficiently lithiated, by the action of n-BuLi, in a regioselective manner.Those positions on the aromatic nucleus just flanked by a coordinating, or an acid-base, group could be metalated by action of the t-BuLi/THP system, in favorable cases.

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