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cis-3a,7a-dihydro-3,3a,5,6-tetraphenyl-1H-inden-1-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

16643-52-0

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16643-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16643-52-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,4 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 16643-52:
(7*1)+(6*6)+(5*6)+(4*4)+(3*3)+(2*5)+(1*2)=110
110 % 10 = 0
So 16643-52-0 is a valid CAS Registry Number.

16643-52-0Relevant academic research and scientific papers

Routes to 3aH-Indenes. Deprotonation and Methylation of some Indenones Bearing Ring Junction Substituents

Gilchrist, Thomas L.,Rees, Charles W.,Tuddenham, David

, p. 3221 - 3224 (2007/10/02)

The trienones (1), (2), and (3) have been converted into the corresponding enolate anions by reaction with potassium hydride below -10 deg C.Methyl fluorosulphonate was added to each solution: with the trienones (1) and (3), transient 3aH-indenes (4a) and

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