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143093-93-0

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143093-93-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143093-93-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,0,9 and 3 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 143093-93:
(8*1)+(7*4)+(6*3)+(5*0)+(4*9)+(3*3)+(2*9)+(1*3)=120
120 % 10 = 0
So 143093-93-0 is a valid CAS Registry Number.

143093-93-0Downstream Products

143093-93-0Relevant articles and documents

Macrocyclic Polyether Tetralactams II : A Study of their Binding Properties with Alkaline - Earth Cations

Pigot, Thierry,Duriez, Marie-Christine,Picard, Claude,Cazaux, Louis,Tisnes, Pierre

, p. 4359 - 4368 (1992)

Solvent extractions of alkali and alkaline-earth picrates were carried out in a water-chloroform system using newly synthesized tetralactams containing dimethyleneoxy moieties.These ligands display excellent extracting properties for Ca2+, Ba2+ and Sr2+ cations.Some of the less lipophilic derivatives have greater preference for Ba2+ vs.Na+ and Zn2+ and, to a lesser extent, K+, Mg2+ and Ca2+.In addition, the stability constants were determined for the 1:1 and the 1:2 M2+:tetralactam complex by UV spectrophotometry in THF solution.In each series of tetralactams log KS values as high as 6 were observed for Ca2+, Sr2+ and Ba2+ ions.The 18-, 21- and 24-membered tetralactams complex preferentially Sr2+, Ca2+ and Ba2+ cations respectively.Keywords: Tetralactam; Complexation; Stability Constants; Liquid-Liquid-Extraction; Alkaline-Earth Cations

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