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109323-55-9

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109323-55-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109323-55-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,3,2 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 109323-55:
(8*1)+(7*0)+(6*9)+(5*3)+(4*2)+(3*3)+(2*5)+(1*5)=109
109 % 10 = 9
So 109323-55-9 is a valid CAS Registry Number.

109323-55-9Downstream Products

109323-55-9Relevant articles and documents

A CARBOCATIONIC ROUTE TO 3-SUBSTITUTED 1,4-CYLOHEPTADIENES

Mayr, Herbert,Heilmann, Werner,Lammers, Roswitha

, p. 6663 - 6668 (1986)

The Lewis acid catalyzed reaction of 5-chloro-1,3-cycloheptadiene 4 with silyl enol ethers yields α-cycloheptadienyl substituted carbonyl compounds in high yield.Since 4 is easily prepared from cycloheptatriene, and the cycloheptadienyl cation 3 is preferably attacked at 3-position, this reaction opens an efficient access to 3-substituted 1,4-cycloheptadienes.

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