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161945-45-5

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161945-45-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161945-45-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,9,4 and 5 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 161945-45:
(8*1)+(7*6)+(6*1)+(5*9)+(4*4)+(3*5)+(2*4)+(1*5)=145
145 % 10 = 5
So 161945-45-5 is a valid CAS Registry Number.

161945-45-5Relevant academic research and scientific papers

An Efficient and Versatile Synthesis of the Butenolide Subunit of 4-Hydroxylated Annonaceous Acetogenins

Hoye, Thomas R.,Humpal, Paul E.,Jimenez, Jorge I.,Mayer, Michael J.,Tan, Lushi,Ye, Zhixiong

, p. 7517 - 7520 (2007/10/02)

Title butenolides 2 have been synthesized by an efficient and versatile route that provides access to any stereoisomer by use of individual enantiomers of the precursors 3-butyn-2-ol and terminal epoxides.

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