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33028-83-0

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33028-83-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33028-83-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,0,2 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 33028-83:
(7*3)+(6*3)+(5*0)+(4*2)+(3*8)+(2*8)+(1*3)=90
90 % 10 = 0
So 33028-83-0 is a valid CAS Registry Number.

33028-83-0Downstream Products

33028-83-0Relevant articles and documents

Regiochemistry of nucleophilic substitution of pentachloropyridine with N and O bidentate nucleophiles

Poorfreidoni, Alireza,Ranjbar-Karimi, Reza,Kia, Reza

, p. 4398 - 4406 (2015/06/16)

Site reactivity of some enol-imines derived from N-aryl formamides with pentachloropyridine under basic conditions in dry CH3CN was investigated. The aromatic nucleophilic substitution of pentachloropyridine with enol-imines occurs at the 4-position of pyridine ring by both oxygen and nitrogen site of enol-imines. Nucleophilic attack by the oxygen of enol-imine gave corresponding oximino compounds as a mixture of E- and Z-isomers. In contrast, nucleophilic attack by the nitrogen of enol-imine gave the unexpected N,N-di-substituted aryl compounds. The structures of all the compounds were confirmed by IR, 1H NMR, 13C NMR and 19F NMR spectroscopy as well as elemental analysis and X-ray crystallography.

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