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39521-78-3

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39521-78-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39521-78-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,5,2 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 39521-78:
(7*3)+(6*9)+(5*5)+(4*2)+(3*1)+(2*7)+(1*8)=133
133 % 10 = 3
So 39521-78-3 is a valid CAS Registry Number.

39521-78-3Relevant articles and documents

Stereochemistry of the Bicyclopentane Ringopening; Thermolysis of Tricyclo2,4>heptane Derivatives

Roth, Wolfgang R.,Klaerner, Frank-Gerit,Grimme, Wolfram,Koeser, Hans G.,Busch, Ralf,et al.

, p. 2717 - 2737 (2007/10/02)

Thermolysis of the anti-tricyclic compounds 6, 22 and 34 proceeds preferentially by concerted 2s+?2a>-reactions and leads to cis,trans-olefines 8, 24 and 37.The rearrangement of the syn-isomers on the other hand seems to be a nonconcerted reaction yielding the diradicals 15, 27 and 36.

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