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1113009-72-5

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1113009-72-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1113009-72-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,1,3,0,0 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1113009-72:
(9*1)+(8*1)+(7*1)+(6*3)+(5*0)+(4*0)+(3*9)+(2*7)+(1*2)=85
85 % 10 = 5
So 1113009-72-5 is a valid CAS Registry Number.

1113009-72-5Relevant articles and documents

Highly efficient Bronsted acid-catalyzed cycloisomerizations of alkynes bearing bis(acetoxy) groups to indenyl ketones

Liu, Yuanhong,Zhou, Shaolin,Li, Guijie,Yan, Bin,Guo, Shenghai,Zhou, Yebing,Zhang, Hao,Wang, Peng George

supporting information; body text, p. 797 - 801 (2009/04/08)

A Bronsted acid-catalyzed cycloisomerization of functionalized alkynes is described, which is assumed to be initiated through the formation of a benzylic cation intermediate. The reaction offers a highly efficient and straightforward route to indenyl ketones with a wide range of substituents under mild conditions.

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