Cas 1373334-90-7,C24H17BrO4

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Check Digit Verification of cas no

The CAS Registry Mumber 1373334-90-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,3,3,3 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1373334-90:
(9*1)+(8*3)+(7*7)+(6*3)+(5*3)+(4*3)+(3*4)+(2*9)+(1*0)=157
157 % 10 = 7
So 1373334-90-7 is a valid CAS Registry Number.

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1373334-90-7Relevant academic research and scientific papers

Metal-free tandem Friedel-Crafts/lactonization reaction to benzofuranones bearing a quaternary center at C3 position

Chen, Long,Zhou, Feng,Shi, Tao-Da,Zhou, Jian

, p. 4354 - 4362 (2012/06/18)

A metal-free tandem Friedel-Crafts/lactonization reaction to 3,3-diaryl or 3-alkyl-3-aryl benzofuranones catalyzed by HClO4 was reported. A variety of tertiary α-hydroxy acid esters could readily react with substituted phenols to afford the des

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