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117330-45-7

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117330-45-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117330-45-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,3,3 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 117330-45:
(8*1)+(7*1)+(6*7)+(5*3)+(4*3)+(3*0)+(2*4)+(1*5)=97
97 % 10 = 7
So 117330-45-7 is a valid CAS Registry Number.

117330-45-7Relevant articles and documents

Synthesis and Characterisation of the Sodium and Lithium Cryptates of Macrobicyclic Ligands Incorporating Pyridine, Bipyridine, and Biisoquinoline Units

Alpha, Beatrice,Anklam, Elke,Deschenaux, Robert,Lehn, Jean-Marie,Pietraskiewicz, Marek

, p. 1042 - 1052 (1988)

Synthetic procedures have been developed for the preparation of sodium and lithium cryptates of the macrobicyclic ligands 1-11 containing pyridine, bipyridine, and biisoquinoline groups.They involve stepwise construction of the bicyclic system as well as direct macrobicyclisation procedures (Scheme 1) and give access to both symmetrical and dissymmetrical structures.Marked cation template effects have been found that facilitate the cyclisation processes.The ligands 1-11 were isolated as their cryptates with Na+ or Li+ cations.

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