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55709-59-6

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55709-59-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55709-59-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,7,0 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55709-59:
(7*5)+(6*5)+(5*7)+(4*0)+(3*9)+(2*5)+(1*9)=146
146 % 10 = 6
So 55709-59-6 is a valid CAS Registry Number.

55709-59-6Relevant articles and documents

Ruthenium-Catalyzed [2+2+2] Cycloaddition of 1,6-Enynes and Unactivated Alkynes: Access to Ring-Fused Cyclohexadienes

Liu, Rui,Giordano, Laurent,Tenaglia, Alphonse

, p. 2245 - 2257 (2017)

The [2+2+2] intermolecular carbocyclization reactions between 1,6-enynes and alkynes catalyzed by [RuCl(cod)(Cp*)] (cod=1,5-cyclooctadiene, Cp=pentamethylcyclopentadienyl) are reported to provide bicyclohexa-1,3-dienes. The presented reaction conditions are compatible with internal and terminal alkynes and the chemo- and regioselectivity issues are controlled by the presence of substituents at the propargyl carbon center of the alkyne(s) partner(s).

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