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190251-63-9

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190251-63-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 190251-63-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,2,5 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 190251-63:
(8*1)+(7*9)+(6*0)+(5*2)+(4*5)+(3*1)+(2*6)+(1*3)=119
119 % 10 = 9
So 190251-63-9 is a valid CAS Registry Number.

190251-63-9Downstream Products

190251-63-9Relevant articles and documents

Technetium and rhenium oxo-complexes of new tetradentate ligands with N2S2 and NS3 donor sets

Archer, Colin M.,Dilworth, Jonathan R.,Griffiths, D. Vaughan,Al-Jeboori, Mohammad J.,Kelly, J. Duncan,Lu, Canzhong,Rosser, Mark J.,Zheng, Yifan

, p. 1403 - 1410 (2007/10/03)

A series of new tetradentate, nitrogen-sulfur donor proligands with amido or amino donor groups have been synthesized and their rhenium and technetium oxo-complexes prepared. The substitution pattern and length of the ligand backbone can be varied without affecting the co-ordination chemistry. The NS3H3 amido-proligands reacted rapidly with the technetium(V) precursor [TcOCl4]- at reflux in methanol to give the technetium(IV) species [TcO(NS3)]- in very high radiochemical purity (ca. 100%), but these complexes decompose over a period of hours or days. They also reacted with the rhenium(V) precursors [ReO2(py)4]Cl (py = pyridine) or [ReOCl3(PPh3)2] at reflux in methanol, but only in the presence of a base. Stable neutral rhenium(V) complexes of the type [ReO(NS3)] were formed, and the crystal structures of two determined. A reduced amino version of the NS3H3 proligand gave an analogous [ReO(NS3)] complex, and its crystal structure was determined.

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