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7,11-diphenylspiro[5.5]undecane-1,5,9-trione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

69239-09-4

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69239-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69239-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,2,3 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 69239-09:
(7*6)+(6*9)+(5*2)+(4*3)+(3*9)+(2*0)+(1*9)=154
154 % 10 = 4
So 69239-09-4 is a valid CAS Registry Number.

69239-09-4Relevant academic research and scientific papers

Stereoselective synthesis of spiro[5.5]undecane derivatives via biocatalytic [5+1] double Michael additions

Chen, Xiao-Yang,Liang, Yi-Ru,Xu, Fang-Li,Wu, Qi,Lin, Xian-Fu

, p. 18 - 22 (2013)

A novel enzymatic, promiscuous protocol of d-aminoacylase (DA)-catalyzed [5+1] double Michael addition was developed herein, for the synthesis of (hetero)spiro[5.5]undecane derivatives in moderate yields. It is notable that almost only the cis isomers were obtained through this biocatalytic methodology in all the cases according to their 1H and 13C NMR spectra. It is the first report on hydrolase-catalyzed double Michael addition in organic solvent.

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