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3021-23-6

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3021-23-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3021-23-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,0,2 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 3021-23:
(6*3)+(5*0)+(4*2)+(3*1)+(2*2)+(1*3)=36
36 % 10 = 6
So 3021-23-6 is a valid CAS Registry Number.

3021-23-6Relevant articles and documents

Cross-metathesis between α-methylene-γ-butyrolactone and olefins: A dramatic additive effect

Moise, Joelle,Arseniyadis, Stellios,Cossy, Janine

, p. 1695 - 1698 (2007)

Olefin cross-metathesis between α-methylene-γ-butyrolactone and terminal olefins is described. Moderate to excellent yields of α-alkylidene-γ-butyrolactones were obtained with high E-stereoselectivity in the presence of low catalyst loading in refluxing CH 2Cl2. In addition, the use of various additives was found to have a dramatic effect on the efficiency of the cross-metathesis (CM) process by circumventing the formation of the isomerized byproduct.

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