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25860-27-9

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25860-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25860-27-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,8,6 and 0 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 25860-27:
(7*2)+(6*5)+(5*8)+(4*6)+(3*0)+(2*2)+(1*7)=119
119 % 10 = 9
So 25860-27-9 is a valid CAS Registry Number.

25860-27-9Relevant articles and documents

Clay-catalyzed solventless addition reactions of furan with α,β- unsaturated carbonyl compounds

Avalos, Martin,Babiano, Reyes,Bravo, Jose L.,Cintas, Pedro,Jimenez, Jose L.,Palacios, Juan C.

, p. 9301 - 9304 (2007/10/03)

The reaction of furan with α,β-unsaturated carbonyl dienophiles catalyzed by K10 montmorillonite in the absence of organic solvents produces the corresponding Diels-Alder adducts and, in the case of methyl vinyl ketone, Michael-type products, under much milder conditions than the conventional protocols. The results are consistent with acid catalysis on the clay surface. Acrylates gave lower yields and/or decomposition products. The reaction can be extended to alkynic substrates such as DMAD to afford cycloadducts in good yields.

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