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401504-39-0

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401504-39-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 401504-39-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,1,5,0 and 4 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 401504-39:
(8*4)+(7*0)+(6*1)+(5*5)+(4*0)+(3*4)+(2*3)+(1*9)=90
90 % 10 = 0
So 401504-39-0 is a valid CAS Registry Number.

401504-39-0Relevant articles and documents

Palladium-catalyzed intramolecular α-arylation of α-amino acid esters

Gaertzen, Oliver,Buchwald, Stephen L.

, p. 465 - 475 (2002)

The Pd-catalyzed intramolecular α-arylation of α-amino acid esters is described. Starting from readily available amino acids, the synthesis of a variety of isoindolines and tetrahydroisoquinoline carboxylic acid esters has been accomplished. Additionally, fused tricyclic systems can be efficiently prepared from cyclic amino acid esters. Reaction conditions have been found that allow the use of tert-butyl ester and N-(benzyloxycarbonyl) protecting groups.

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