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49820-66-8

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49820-66-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 49820-66-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,8,2 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 49820-66:
(7*4)+(6*9)+(5*8)+(4*2)+(3*0)+(2*6)+(1*6)=148
148 % 10 = 8
So 49820-66-8 is a valid CAS Registry Number.

49820-66-8Relevant articles and documents

Synthesis of 4,4-substituted-5,5-mercapto-3,3'-bi-1,2,4-triazole and 2,2'-amino-substituted-5,5-bi-1,3,4-thiodiazole

Dobosz,Rekas

, p. 51 - 54 (2007/10/02)

In reaction of oxalic acid dihydrazide with isothiocyanates were obtained the respective thiosemicarbaside derivatives (Ia-IXa). Their cyclization in alkaline media have given the corresponding 4,4'-substituted-5,5'-mercapto-3,3'-bi-1,2,4-triazole (Ib-IXb

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