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1459721-83-5

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1459721-83-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1459721-83-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,5,9,7,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1459721-83:
(9*1)+(8*4)+(7*5)+(6*9)+(5*7)+(4*2)+(3*1)+(2*8)+(1*3)=195
195 % 10 = 5
So 1459721-83-5 is a valid CAS Registry Number.

1459721-83-5Relevant articles and documents

Synthesis and properties of imidazolo-fused benzotriazinyl radicals

Berezin, Andrey A.,Constantinides, Christos P.,Mirallai, Styliana I.,Manoli, Maria,Cao, Levy L.,Rawson, Jeremy M.,Koutentis, Panayiotis A.

, p. 6780 - 6795 (2013/10/01)

1,3-Diphenylbenzo[e][1,2,4]triazin-7(1H)-one, the oxidation product of 1,3-diphenyl-1,4-dihydro-1,2,4-benzotriazin-4-yl (Blatter's radical), reacts with N′-arylbenzamidines in PhMe at ca. 100 °C in the presence of N,N-diisopropylethylamine (Hu?nig's base) (1 equiv.) to give N′-aryl-N-(1,7-dihydro-7-oxo-1,3-diphenylbenzo[e][1,2,4]triazin-6-yl) benzimidamides in 49-95% yield. In neat AcOH heated at ca. 120 °C, N′-aryl-N-(1,7-dihydro-7-oxo-1,3-diphenylbenzo[e][1,2,4]triazin-6-yl) benzimidamides cyclodehydrate to give the novel 8-substituted 1,3,7-triphenyl-4,8-dihydro-1H-imidazo[4,5-g][1,2,4]benzotriazin-4-yls in 13-81% yield. During the optimization of this cyclodehydration an additional oxazole fused benzotriazinyl radical 1,3,7-triphenyl-1,4-dihydro[1,3]oxazolo[4,5-g][1,2, 4]benzotriazin-4-yl was isolated as a side product and characterized. The CV and EPR data of the imidazolo- and oxazolo-fused radicals are presented as well as single crystal X-ray structures of 1,3,7-triphenyl-1,4-dihydro-[1,3]oxazolo[4,5- g][1,2,4]benzotriazin-4-yl and 1,3,7,8-tetraphenyl-4,8-dihydro-1H-imidazo[4,5-g] [1,2,4]benzotriazin-4-yl.

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