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71546-38-8

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71546-38-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71546-38-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,4 and 6 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 71546-38:
(7*7)+(6*1)+(5*5)+(4*4)+(3*6)+(2*3)+(1*8)=128
128 % 10 = 8
So 71546-38-8 is a valid CAS Registry Number.

71546-38-8Relevant articles and documents

Carbene Rearrangements, X. 2-Vinylcyclobutylidene

Brinker, Udo H.,Koenig, Lothar

, p. 882 - 893 (2007/10/02)

The Bamford-Stevens reaction of 2-vinylcyclobutanone tosylhydrazone sodium salt (13) has been studied with respect to the potential carbene-carbene rearrangement 3 -> 4. 2-Vinylcyclobutylidene (3) surprisingly undergoes exlusively carbene rearrangements.In 3 the cyclobutylidene-methylenecyclopropane rearrangements to 16 and 17 dominate.The 1,3-carbon migration of the divalent carbon is not observed.

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