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39140-53-9

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39140-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39140-53-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,1,4 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 39140-53:
(7*3)+(6*9)+(5*1)+(4*4)+(3*0)+(2*5)+(1*3)=109
109 % 10 = 9
So 39140-53-9 is a valid CAS Registry Number.

39140-53-9Relevant articles and documents

One-pot dichlorinative deamidation of primary β-ketoamides

Zheng, Congke,Zhang, Xiaohui,Ijaz Hussain, Muhammad,Huang, Mingming,Liu, Qing,Xiong, Yan,Zhu, Xiangming

, p. 574 - 577 (2017/01/16)

An approach to the dichlorinative deamidation of primary β-ketoamides through ketonic cleavage is described, and a series of α,α-dichloroketones were furnished mostly in the presence of TEMPO. Based on control experiments, a mechanism involving tandem dichlorination and deamidation is proposed to interpret the observed reactivity.

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