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521949-80-4

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521949-80-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 521949-80-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,2,1,9,4 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 521949-80:
(8*5)+(7*2)+(6*1)+(5*9)+(4*4)+(3*9)+(2*8)+(1*0)=164
164 % 10 = 4
So 521949-80-4 is a valid CAS Registry Number.

521949-80-4Downstream Products

521949-80-4Relevant articles and documents

A way to manage the thermal flexibility of ligand candidates for bioassays

Altamura, Maria,Balacco, Giuseppe,Cuda, Francesco,Guerri, Annalisa,Guidi, Antonio,Meini, Stefania,Menichetti, Stefano,Nativi, Cristina,Pasqui, Franco

, p. 6754 - 6761 (2006)

An original way to manage both stereochemistry and conformational constraints in ligand candidates for bioassays is presented with reference to a group of model N,N′-tetrasubstituted o-phthalamides and thioamides. The study shows that a scale of thermal flexibility in solution can be envisaged, the divisions of which are represented by compounds sharing quite similar geometrical features. NMR spectroscopy and powder X-ray analysis were used for the physical chemical investigation. An attempt to exploit the conformational instability of a model thioamide in the medium of a bioassay was also performed.

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