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1374227-69-6

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1374227-69-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1374227-69-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,4,2,2 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1374227-69:
(9*1)+(8*3)+(7*7)+(6*4)+(5*2)+(4*2)+(3*7)+(2*6)+(1*9)=166
166 % 10 = 6
So 1374227-69-6 is a valid CAS Registry Number.

1374227-69-6Relevant articles and documents

Route to benzo- and pyrido-fused 1,2,4-triazinyl radicals via N ′-(Het)aryl- N ′-[2-nitro(het)aryl]hydrazides

Berezin, Andrey A.,Zissimou, Georgia,Constantinides, Christos P.,Beldjoudi, Yassine,Rawson, Jeremy M.,Koutentis, Panayiotis A.

, p. 314 - 327 (2014/01/17)

A two-step route to 1,3-disubstituted benzo- and pyrido-fused 1,2,4-triazinyl radicals is presented. The route involves the N′-(2-nitroarylation) of easily prepared N′-(het)arylhydrazides via nucleophilic aromatic substitution of 1-halo-2-nitroarenes, which in most cases gives N′-(het)aryl-N′-[2-nitro(het)aryl]hydrazides in good yields. Mild reduction of the nitro group followed by an acid-mediated cyclodehydration gives the fused triazines, which upon alkali treatment afford the desired radicals. Fifteen examples of radicals are presented bearing a range of substituents at N-1, C-3, and C-7, including the pyrid-2-yl and 8-aza analogues. This route to the N′-(het)aryl-N′-[2-nitro(het)aryl]hydrazides, which works well with benzo- and picolinohydrazides, required a modification for aceto- and trifluoroacetohydrazides that involved a multistep synthesis of asymmetrically 1,1-diaryl-substituted hydrazines.

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