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508189-65-9

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508189-65-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 508189-65-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,8,1,8 and 9 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 508189-65:
(8*5)+(7*0)+(6*8)+(5*1)+(4*8)+(3*9)+(2*6)+(1*5)=169
169 % 10 = 9
So 508189-65-9 is a valid CAS Registry Number.

508189-65-9Relevant academic research and scientific papers

Remote anionic fries rearrangement of sulfonates: Regioselective synthesis of indole triflones

Xu, Xiu-Hua,Taniguchi, Misaki,Azuma, Ayaka,Liu, Guo Kai,Tokunaga, Etsuko,Shibata, Norio

, p. 686 - 689 (2013)

An unusual NaH-mediated remote anionic 1,5-thia-Fries rearrangement reaction was developed. This method provides an efficient approach for the regioselective synthesis of not only 2-(2-hydroxyphenyl)-3-indole triflones but also related 3-sulfonylindoles.

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