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864943-41-9

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864943-41-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 864943-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,4,9,4 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 864943-41:
(8*8)+(7*6)+(6*4)+(5*9)+(4*4)+(3*3)+(2*4)+(1*1)=209
209 % 10 = 9
So 864943-41-9 is a valid CAS Registry Number.

864943-41-9Relevant articles and documents

A facile Zr-mediated approach to (Z)-enynols and its application to regio- and stereoselective synthesis of fully substituted dihydrofurans

Liu, Yuanhong,Song, Feijie,Cong, Liqing

, p. 6999 - 7002 (2007/10/03)

Efficient synthetic approaches to stereodefined (Z)-enynols have been developed through zirconium-mediated cross-coupling reactions of three different components involving alkyne, ketone, and alkynyl bromide in a one-pot procedure. The subsequent electrophilic cyclization of a wide variety of (Z)-enynols affords fully substituted (Z)-5-(1-iodoylidene)-2,5-dihydrofurans with high regio- and stereoselectivity under mild reaction conditions.

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