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125049-95-8

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125049-95-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 125049-95-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,0,4 and 9 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 125049-95:
(8*1)+(7*2)+(6*5)+(5*0)+(4*4)+(3*9)+(2*9)+(1*5)=118
118 % 10 = 8
So 125049-95-8 is a valid CAS Registry Number.

125049-95-8Relevant articles and documents

A 4-tert-butylcalix[4]arene tetrahydroxamate podand based on the 1-oxypiperidine-2-one (1,2-PIPO-) chelate. Self-assembly into a supramolecular ionophore driven by coordination of tetravalent zirconium or hafnium(iv)

Jewula, Pawel,Chambron, Jean-Claude,Penouilh, Marie-Jose,Rousselin, Yoann,Meyer, Michel

, p. 22743 - 22754 (2014/06/23)

An octadentate tetrahydroxamic calix[4]arene podand incorporating 1-hydroxypiperidine-2-one (1,2-PIPOH) binding units has been designed as a specific chelator for tetravalent metal cations like Zr4+ or Hf 4+. This receptor, which can be considered as the first ever abiotic ligand possessing only cyclic six-membered hydroxamate groups, has been synthesized and characterized in its tetraprotonated form (1H4). Contrary to expectation, however, this new chelator did not form a 1:1 complex upon reaction with M(acac)4 (M = Zr and Hf; acac = acetylacetonate), but rather self-assembled into a dimeric species of 2:2 stoichiometry. The latter could be characterized in solution by mass spectrometry and NMR spectroscopy as its monopotassium adduct ([M2K(1)2] +), pointing to the ionophoric character of the M2(1) 2 complex. This journal is the Partner Organisations 2014.

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