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1233940-52-7

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1233940-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233940-52-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,9,4 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1233940-52:
(9*1)+(8*2)+(7*3)+(6*3)+(5*9)+(4*4)+(3*0)+(2*5)+(1*2)=137
137 % 10 = 7
So 1233940-52-7 is a valid CAS Registry Number.

1233940-52-7Upstream product

1233940-52-7Relevant academic research and scientific papers

IBX-promoted domino reaction of α-hydroxy amides: A facile one-pot synthesis of isatins

Wang, Yaoling,Cheng, Xu,Zhan, Zhen,Ma, Xiaojun,Nie, Ruifang,Hai, Li,Wu, Yong

, p. 2870 - 2874 (2016)

A novel and temperature-controlled oxidation of α-hydroxy amides in the presence of IBX is described. The divergent one-pot synthesis of isatins and α-formyl amides was achieved in good to excellent yields under metal-free conditions. And these two mild methods can tolerate a variety of functional groups, and are operationally simple.

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