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4943-59-3

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4943-59-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4943-59-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,4 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 4943-59:
(6*4)+(5*9)+(4*4)+(3*3)+(2*5)+(1*9)=113
113 % 10 = 3
So 4943-59-3 is a valid CAS Registry Number.

4943-59-3Relevant articles and documents

Multicomponent synthesis of 1-aryl 1,2,4-triazoles

Tam, Annie,Armstrong, Ian S.,La Cruz, Thomas E.

supporting information, p. 3586 - 3589 (2013/08/23)

A multicomponent (single reactor) process for the synthesis of 1-aryl 1,2,4-triazoles was explored and developed. This transformation prepared the 1,2,4-triazole directly from anilines, amino pyridines, and pyrimidines. The reaction scope was explored with 21 different substrates, and the position of the nitrogen atoms in the newly formed ring was established by 15N labeling and NMR spectroscopy.

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