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(+/-)-(9)-(α-Methyl-benzyl)-fluorenol-(9) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

33511-90-9

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33511-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33511-90-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,5,1 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 33511-90:
(7*3)+(6*3)+(5*5)+(4*1)+(3*1)+(2*9)+(1*0)=89
89 % 10 = 9
So 33511-90-9 is a valid CAS Registry Number.

33511-90-9Relevant academic research and scientific papers

Does the reaction between fluorenone and Grignard reagents involve free fluorenone anion radicals?

Lund, Torben,Pedersen, Morten L.,Frandsen, Lars A.

, p. 9225 - 9226 (2007/10/02)

The ratio between 1,6- and 1,2-addition in the reactions of electrogenerated fluorenone anion radicals with RX in THF were similar to the ratio obtained in the Grignard reaction of fluorenone with RMgX in THF. This indicates that the addition products in the Grignard reaction may be; obtained via the coupling of Freely diffusing fluorenone anion radicals with R radicals.

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