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(r-1H,c-5H)-2,c-4,6,c-8-Tetraphenylbicyclo<3.3.0>octa-2,6-dien is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

139040-29-2

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139040-29-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139040-29-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,4 and 0 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139040-29:
(8*1)+(7*3)+(6*9)+(5*0)+(4*4)+(3*0)+(2*2)+(1*9)=112
112 % 10 = 2
So 139040-29-2 is a valid CAS Registry Number.

139040-29-2Downstream Products

139040-29-2Relevant academic research and scientific papers

Stereochemistry of the Addition of Phenylmetal Reagents to Bicyclooctanediones and -octadienediones. - Synthesis of Phenyl-Substituted Bicyclooctadienes.

Quast, Helmut,Carlsen, Juergen,Herkert, Thomas,Janiak, Rolf,Roeschert, Horst,et al.

, p. 495 - 512 (2007/10/02)

Conjugate addition of dilithium diphenylcyanocuprate is observed only on one side of the dienedione 4b, affording the enedione 5b, but on both sides in the presence of boron trifluoride yielding the diphenyldione 6b.Likewise, the latter reagent gives rise

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