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709030-40-0

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709030-40-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 709030-40-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,0,9,0,3 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 709030-40:
(8*7)+(7*0)+(6*9)+(5*0)+(4*3)+(3*0)+(2*4)+(1*0)=130
130 % 10 = 0
So 709030-40-0 is a valid CAS Registry Number.

709030-40-0Downstream Products

709030-40-0Relevant articles and documents

First Synthesis of Novel Pentaheterocyclic Ring System of 1,2,4-Triazolo[2″,3″:6′,1′]pyrimido [4′,5′ :2,3]pyrido[1,2-a]benzimidazole

Elwan, Nehal M.

, p. 281 - 284 (2007/10/03)

Reaction of 1-amino-3-arylpyrido[1,2-a] benzimidazole-2,4-dicarbonitrile (1) with dimethylformamide-dimethylacetal (DMF-DMA) gave 1-[N,N -(dimethylaminomethylene)amino]-3-arylpyrido[1,2-a]benzimidazole-2, 4-dicarbonitrile (2). Compounds (1) reacted with triethylorthoformate yielding 1-[N-(ethoxymethylene)amino] -3-arylpyrido[1,2-a]benzimidazole-2,4-dicarbonitrile (3). 3-Amino-4-imino-5-aryl-6-cyanopyrimido[5′,4′:5,6]pyrido[1,2-a] benzimidazole (4) was synthesized via condensation of either (2) or (3) with hydrazine hydrate. Reactions of (4) with acetic anhydride, ethyl chloroformate or aryl isothiocyanate yielded the respective derivative of the new ring system namely 1,2,4-triazolo[2″,3″:6′,1′]pyrimido[4′ ,5′:2,3]pyrido[1,2-a]benzimidazole (5-7).

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