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1-Benzyl-2-[2-(triphenyl-λ5-phosphanylidene)-acetyl]-1H-indole-3-carboxylic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

196622-20-5

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196622-20-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 196622-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,6,6,2 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 196622-20:
(8*1)+(7*9)+(6*6)+(5*6)+(4*2)+(3*2)+(2*2)+(1*0)=155
155 % 10 = 5
So 196622-20-5 is a valid CAS Registry Number.

196622-20-5Relevant academic research and scientific papers

Reaction of 1-benzylindole-2,3-dicarboxylic anhydride with wittig reagents

Miki, Yasuyoshi,Hachiken, Hiroko,Sugimoto, Yoshiko,Yanase, Norihide

, p. 1759 - 1766 (1997)

Reaction of 1-benzylindole-2,3-dicarboxylic anhydride with methylene-triphenylphosphorane (Ph3P=CH2) and carbethoxymethylenetriphenylphosphorane (Ph3P=CHCOOEt) gave [2-(3-carboxyindol-2-yl)-2-oxoethylidene]triphenylphosphorane derivatives, which were converted to cyclopenta[b]indol-3-ones after decarboxylation and treatment with aldehydes. On the other hand, the anhydride reacted with carbethoxyethylidenetriphenylphosphorane (Ph3P=C(Me)COOEt) to afford a mixture of two enol lactones.

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