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817622-26-7

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817622-26-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 817622-26-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,7,6,2 and 2 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 817622-26:
(8*8)+(7*1)+(6*7)+(5*6)+(4*2)+(3*2)+(2*2)+(1*6)=167
167 % 10 = 7
So 817622-26-7 is a valid CAS Registry Number.

817622-26-7Relevant articles and documents

First asymmetric synthesis of orthoquinone monoketal enantiomers via anodic oxidation

Quideau, Stephane,Fabre, Isabelle,Deffieux, Denis

, p. 4571 - 4573 (2007/10/03)

(Chemical equation presented) An asymmetric synthesis of orthoquinone monoketals was accomplished using anodic oxidation to convert aryl methyl ethers bearing a chiral ethanol unit into orthoquinone bisketals, followed by monohydrolysis of their dimethyl ketal unit. All four possible stereoisomers were generated in a diastereoselective manner by varying the attachment point of the chiral pro-ketal alcoholic auxiliary to the starting arene. A preliminary screening of subsequent nucleophilic addition reactions confirmed the potential utility of these synthons in asymmetric synthesis.

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