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51420-45-2

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51420-45-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51420-45-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,4,2 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 51420-45:
(7*5)+(6*1)+(5*4)+(4*2)+(3*0)+(2*4)+(1*5)=82
82 % 10 = 2
So 51420-45-2 is a valid CAS Registry Number.

51420-45-2Relevant articles and documents

On Triazoles. V . Synthesis of 1- and 2-R1-3-R2,R3-Amino-5-amino-1,2,4-triazoles

Reiter, Jozsef,Pongo, Laszlo,Somorai, Tamas,Dvortsak, Peter

, p. 401 - 408 (2007/10/02)

The correct isomeric and tautomeric structure of different 1- and 2-R1-3-R2,R3-amino-5-amino-1,2,4-triazole derivatives prepared from the corresponding N-cyano-N'-R2,R3-S-methyl-isothioureas and the corresponding hydrazines was proved with the help of their ir, uv, 1H-nmr and 13C-nmr spectra as well as the uv spectra of the Schiff bases of an isomeric pair.

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