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1448146-98-2

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1448146-98-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1448146-98-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,4,8,1,4 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1448146-98:
(9*1)+(8*4)+(7*4)+(6*8)+(5*1)+(4*4)+(3*6)+(2*9)+(1*8)=182
182 % 10 = 2
So 1448146-98-2 is a valid CAS Registry Number.

1448146-98-2Downstream Products

1448146-98-2Relevant articles and documents

Regiocontrolled SNAr reaction on 2,3-dihalopyridines with NaSMe to obtain bromo(methylthio)pyridines as key precursors of 3-halo-2-(hetero) arylthieno[2,3- b ]pyridines and thieno[3,2- b ]pyridines

Begouin, Agathe,Peixoto, Daniela,Queiroz, Maria-Joao R. P.

, p. 1489 - 1496 (2013/07/19)

The synthesis of 3-halo-2-(hetero)arylthieno[2,3-b]pyridines and 3-halo-2-(hetero)arylthieno[3,2-b]pyridines has been performed through a three-step methodology from 3-bromo-2-chloropyridine or 2-bromo-3- fluoropyridine, respectively. The key step of this methodology is the formation of the required bromo(methylthio)pyridines by a regiocontrolled nucleophilic aromatic substitution (SNAr) with sodium methanethiolate (NaSMe). Then, the Sonogashira coupling with (hetero)arylalkynes followed by a halocyclization with bromine or iodine, afforded the expected 3-halo-2-(hetero)arylthienopyridines.

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