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(3aS,7aR)-4,7-Diphenyl-3a,7a-dihydro-isobenzofuran-1,3-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

25221-74-3

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25221-74-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25221-74-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,2,2 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 25221-74:
(7*2)+(6*5)+(5*2)+(4*2)+(3*1)+(2*7)+(1*4)=83
83 % 10 = 3
So 25221-74-3 is a valid CAS Registry Number.

25221-74-3Upstream product

25221-74-3Relevant academic research and scientific papers

Photoinduced electron-transfer cope rearrangements of 3,6-diaryl-2,6- octadienes and 2,5-diaryl-3,4-dimethyl-1,5-hexadienes: Stereospecificity and an unexpected formation of the bicyclo[2.2.0]hexane Derivatives

Ikeda, Hiroshi,Takasaki, Toshihiko,Takahashi, Yasutake,Konno, Akinori,Matsumoto, Masao,Hoshi, Yosuke,Aoki, Takashi,Suzuki, Takanori,Goodman, Joshua L.,Miyashi, Tsutomu

, p. 1640 - 1649 (2007/10/03)

Under the 9,10-dicyanoanthracene-sensitized photoinduced electron- transfer conditions, (Z,Z)-, (E,E)-, (E,Z)-3,6-diaryl-2,6-octadiene and (d,l),(meso)-2,5-diaryl-3,4-dimethyl-1,5-hexadiene stereospecifically undergo the Cope rearrangement to give a Cope

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