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250267-09-5

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250267-09-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 250267-09-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,2,6 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 250267-09:
(8*2)+(7*5)+(6*0)+(5*2)+(4*6)+(3*7)+(2*0)+(1*9)=115
115 % 10 = 5
So 250267-09-5 is a valid CAS Registry Number.

250267-09-5Relevant articles and documents

Photooxygenation of chiral dienol ethers: Asymmetric synthesis of alkoxydioxines

Dussault, Patrick H.,Han, Qiang,Sloss, Darby G.,Symonsbergen, David J.

, p. 11437 - 11454 (2007/10/03)

The addition of 1O2 to chiral dienol ethers provides a new route to alkoxydioxines (alkoxyendoperoxides). Depending upon substitution and geometry, the [4+2] cycloaddition is accompanied or even supplanted by [2+2] cycloaddition leading to alkene cleavage and/or ene-like reaction leading to allylic hydroperoxides. The diastereoselectivity of cycloaddition is ultimately limited by the conformational freedom of the dienol ether substrates.

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