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20420-56-8

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20420-56-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20420-56-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,2 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 20420-56:
(7*2)+(6*0)+(5*4)+(4*2)+(3*0)+(2*5)+(1*6)=58
58 % 10 = 8
So 20420-56-8 is a valid CAS Registry Number.

20420-56-8Downstream Products

20420-56-8Relevant articles and documents

Synthesis and antimicrobial activity of some novel quinoxalines

Soliman,Amer

experimental part, p. 1401 - 1410 (2012/04/04)

2-Hydrazino-3-chloroquinoxaline 2 was prepared and reacted with active methylene compounds, potassium thiocyanate, carbon disulfide, phenylisothiocyanate, acetic acid, ethyl chloroformate, triethyl orthoformate, and Lawessen's reagent (LR) to give a new class of fused quinoxalines 4-16, respectively. Also, 2,3-dihydrazinoquinoxaline 3 was prepared and reacted with carbon disulfide, phenyl isothiocyanate, and triethyl orthoformate to give the corresponding di[1,2,4] triazolo-[4,3-a:3′,4′-c]-quinoxalines 17-19, respectively. Reaction of 3 with LR gave the corresponding di[1,2,4,3] triazophospholo[4,5-a:5′,4′-c]quinoxaline-1,6-dithione (20). It was found that all synthesized compounds exhibit antimicrobial activity and that compound 20 had a broad spectrum of activity. Copyright Taylor & Francis Group, LLC.

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