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20433-12-9

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20433-12-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20433-12-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,3 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 20433-12:
(7*2)+(6*0)+(5*4)+(4*3)+(3*3)+(2*1)+(1*2)=59
59 % 10 = 9
So 20433-12-9 is a valid CAS Registry Number.

20433-12-9Relevant articles and documents

Regiospecific Synthesis of N 2-Aryl 1,2,3-Triazoles from 2,5-Disubstituted Tetrazoles via Photochemically Generated Nitrile Imine Intermediates

Stewart, Sam,Harris, Robert,Jamieson, Craig

supporting information, p. 2480 - 2484 (2015/07/27)

The synthesis of N2-aryl 1,2,3-triazoles from 2,5-disubstituted tetrazoles was achieved under photochemical conditions. This simple and mild one-step reaction provides regiospecific access to 2,4,5-substituted 1,2,3-triazoles via a nitrile imine intermediate. Syntheses of alkyl and heterocylic derivatives were also investigated.

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