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681427-62-3

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681427-62-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 681427-62-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,4,2 and 7 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 681427-62:
(8*6)+(7*8)+(6*1)+(5*4)+(4*2)+(3*7)+(2*6)+(1*2)=173
173 % 10 = 3
So 681427-62-3 is a valid CAS Registry Number.

681427-62-3Downstream Products

681427-62-3Relevant articles and documents

Intermolecular and intramolecular pauson-khand reactions of functionalized Allenes

Gonzalez-Gomez, Alvaro,Anorbe, Loreto,Poblador, Amalia,Dominguez, Gema,Perez-Castells, Javier

supporting information; experimental part, p. 1370 - 1377 (2009/04/11)

Pauson-Khand reactions of functionalized allenes with different alkynes give cyclopentenones with generally high regio-and stereoselectivities. The allenes react through their external double bonds, giving cyclopentenones with exocyclic double bond at their β positions and predominantly with E stereochemistry. Some intramolecular reactions with allenynes connected through aromatic rings are described. These give the corresponding heterocycles with moderate to good yields. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

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