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679799-43-0

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679799-43-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 679799-43-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,9,7,9 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 679799-43:
(8*6)+(7*7)+(6*9)+(5*7)+(4*9)+(3*9)+(2*4)+(1*3)=260
260 % 10 = 0
So 679799-43-0 is a valid CAS Registry Number.

679799-43-0Downstream Products

679799-43-0Relevant articles and documents

A convenient method for the preparation of α-vinylfurans by phosphine-initiated reactions of various substituted enynes bearing a carbonyl group with aldehydes

Kuroda, Hirofumi,Hanaki, Emi,Izawa, Hironori,Kano, Michiko,Itahashi, Hiromi

, p. 1913 - 1920 (2007/10/03)

α-Vinylfurans were obtained by phosphine-initiated cyclization of various enynes bearing a carbonyl group at the ene end in the presence of various aldehydes, in moderate to high yields. The reaction may consist of 1,6-addition of phosphine to the enynes, ring closure, and Wittig reaction between the ylid resulting from cyclization and an aldehyde. Thus, various aldehydes were able to be used in the reaction. The reaction was influenced greatly by the substituents at the acetylene position (R1) and the α-position of the carbonyl group (R3).

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