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51974-51-7

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51974-51-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51974-51-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,9,7 and 4 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 51974-51:
(7*5)+(6*1)+(5*9)+(4*7)+(3*4)+(2*5)+(1*1)=137
137 % 10 = 7
So 51974-51-7 is a valid CAS Registry Number.

51974-51-7Downstream Products

51974-51-7Relevant articles and documents

Copper(I)-Catalyzed Interrupted Click Reaction: Synthesis of Diverse 5-Hetero-Functionalized Triazoles

Wang, Weiguo,Peng, Xianglong,Wei, Fang,Tung, Chen-Ho,Xu, Zhenghu

, p. 649 - 653 (2016)

The 5-heterofunctionalized triazoles are important scaffolds in bioactive compounds, but current click reactions (CuAAC) cannot produce these core structures. A copper(I)-catalyzed interrupted click reaction to access diverse 5-functionalized triazoles is reported. Various 5-amino-, thio-, and selenotriazoles were readily assembled in one step in high yields. The reaction proceeds under mild conditions with complete regioselectivity. It also features a broad substrate scope and good functional group compatibility.

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