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89693-83-4

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89693-83-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89693-83-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,6,9 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 89693-83:
(7*8)+(6*9)+(5*6)+(4*9)+(3*3)+(2*8)+(1*3)=204
204 % 10 = 4
So 89693-83-4 is a valid CAS Registry Number.

89693-83-4Relevant articles and documents

Rh(II)-catalyzed intramolecular annulation of N-sulfonyl 1,2,3-triazoles with indole derivatives: A new method for synthesis pyranoindoles

Xie, Hui,Yang, Jian-Xin,Bora, Pranjal Protim,Kang, Qiang

supporting information, p. 3014 - 3021 (2016/05/19)

A direct and highly stereoselective approach for the synthesis of Z-alkenyl-pyranoindoles had been developed by utilizing Rh(II)-catalyzed intramolecular cyclization of N-sulfonyl-1,2,3-triazoles with indole derivatives. A variety of pyranoindoles were obtained in 44-93% yields. Moreover, a more convenient synthesis of pyranoindoles starting from terminal alkyne was realized via a Cu-Rh sequentially catalyzed one-pot cascade reaction.

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