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17961-80-7

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17961-80-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17961-80-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,6 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 17961-80:
(7*1)+(6*7)+(5*9)+(4*6)+(3*1)+(2*8)+(1*0)=137
137 % 10 = 7
So 17961-80-7 is a valid CAS Registry Number.

17961-80-7Relevant articles and documents

Regiocontrolled cobalt-catalyzed Diels-Alder reactions of silicon-functionalized, terminal, and internal alkynes

Hilt, Gerhard,Janikowski, Judith

supporting information; experimental part, p. 773 - 776 (2009/08/19)

(Chemical Equation Presented) The efficient control of the regiochemistry of the Diels-Alder adducts which are formed in excellent yields from 1,3-dienes and alkynylsilanes can be realized utilizing cobalt complexes with a pyridine-imine ligand or a dppe ligand, respectively. The application of 2-trimethylsilyloxy-1,3-butadiene leads to a very interesting cyclohexenone derivative suitable for further transformations.

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