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exo-4,9-epoxy-3a,4,9,9a-tetrahydro-1H-benzindene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

129893-83-0

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129893-83-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129893-83-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,8,9 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 129893-83:
(8*1)+(7*2)+(6*9)+(5*8)+(4*9)+(3*3)+(2*8)+(1*3)=180
180 % 10 = 0
So 129893-83-0 is a valid CAS Registry Number.

129893-83-0Downstream Products

129893-83-0Relevant academic research and scientific papers

BENZINDENE AND ITS KATZ REACTION

Burger, Ulrich,Thorel, Pierre-Jean,Schaller, Jean-Pierre

, p. 3155 - 3156 (1990)

A novel and very short synthesis of the useful title hydrocarbon 2 is presented.Its key step is based on a Diels-Alder reaction of isobenzofuran 4.The lithium salt of 2 gives a remarkably stable valence isomer of anthracene 1 in a reaction analogous to the indene -> benzobenzvalene transformation.

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