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1621433-71-3

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1621433-71-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1621433-71-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,1,4,3 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1621433-71:
(9*1)+(8*6)+(7*2)+(6*1)+(5*4)+(4*3)+(3*3)+(2*7)+(1*1)=133
133 % 10 = 3
So 1621433-71-3 is a valid CAS Registry Number.

1621433-71-3Downstream Products

1621433-71-3Relevant academic research and scientific papers

TfOH catalyzed synthesis of 9-arylfluorenes via tandem reaction under warm and efficient conditions

Li, Qingcui,Xu, Wengang,Hu, Jiaxing,Chen, Xiaoqing,Zhang, Fanglin,Zheng, Hua

, p. 27722 - 27725 (2014/07/21)

A tandem ring-closing reaction was developed for the synthesis of 9-arylfluorenes and their derivatives. The reaction is metal-free, straightforward and efficient under warm conditions. More than 99% yield is obtained. This journal is the Partner Organisations 2014.

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