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518033-67-5

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518033-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 518033-67-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,8,0,3 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 518033-67:
(8*5)+(7*1)+(6*8)+(5*0)+(4*3)+(3*3)+(2*6)+(1*7)=135
135 % 10 = 5
So 518033-67-5 is a valid CAS Registry Number.

518033-67-5Relevant articles and documents

Structure-function relationship of amino acid-[2]rotaxanes

Smukste, Inese,Smithrud, David B.

, p. 2547 - 2558 (2003)

Synthetic methodology was developed to construct amino acid-[2]rotaxanes that have phenylalanine and 3,5-di-tert-butylbenzene as blocking groups and dibenzo-24-crown-8, derivatized with either N-acetylargininyl or a carboxylic group, as the ring. A relative measure of the intramolecular interaction energies between the functional groups in DMSO/water mixtures is obtained by comparing their pKa values. Rotaxane structures were investigated through 2D NMR analysis and molecular dynamics simulations. Association constants for complexes of amino acids and rotaxanes in various protonation states were determined in a variety of solvent systems by 1H NMR analysis. The unique intracomponent interactions that exist in the rotaxanes and their ability to act as artificial receptors are discussed.

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