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473259-17-5

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473259-17-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 473259-17-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,3,2,5 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 473259-17:
(8*4)+(7*7)+(6*3)+(5*2)+(4*5)+(3*9)+(2*1)+(1*7)=165
165 % 10 = 5
So 473259-17-5 is a valid CAS Registry Number.

473259-17-5Relevant articles and documents

Synthesis of 1-Azaspiroundecane ring system via Thorpe-Ziegler annulation of 2-Cyano-2-(4-Cyano-Tethered) Arylpiperidines

Malassene, Richard,Toupet, Loic,Hurvois, Jean-Pierre,Moinet, Claude

, p. 895 - 898 (2007/10/03)

An efficient stereocontrolled route to the spiro[5.5]undecan framework of the histrionicotoxin alkaloids, employing anodic cyanation and Thorpe-Ziegler cyclization as key steps, is described. In the process of gaining information concerning the hydrolysis of the cyanoenamine function in 8, an unexpected intramolecular Friedel-Crafts type reaction provided the aza-fluorene 10.

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