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140928-57-0

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140928-57-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140928-57-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,9,2 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 140928-57:
(8*1)+(7*4)+(6*0)+(5*9)+(4*2)+(3*8)+(2*5)+(1*7)=130
130 % 10 = 0
So 140928-57-0 is a valid CAS Registry Number.

140928-57-0Relevant articles and documents

Highly Stereoselective 3 + 2 Annulations by Cyclopropanation of Vinyl Ethers with Rhodium(II)-Stabilized Vinylcarbenoids Followed by a Formally Forbidden 1,3-Sigmatropic Rearrangement

Davies, Huw M. L.,Hu, Baihua

, p. 3186 - 3190 (1992)

A highly stereoselective 3 + 2 annulation has been developed by cyclopropanation of vinyl ethers with rhodium(II)-stabilized vinylcarbenoids to generate vinylcyclopropanes followed by a Et2AlCl-catalyzed 1,3-sigmatropic rearrangement.The success of this m

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