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618442-56-1

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618442-56-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 618442-56-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,1,8,4,4 and 2 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 618442-56:
(8*6)+(7*1)+(6*8)+(5*4)+(4*4)+(3*2)+(2*5)+(1*6)=161
161 % 10 = 1
So 618442-56-1 is a valid CAS Registry Number.

618442-56-1Relevant articles and documents

1H NMR Studies on the Interactions of Acyclic Polyethers with Dimethyltin Dichloride in Aromatic Solvents

Otera, Junzo,Shiomi, Tadashi,Murakami, Kazuhiko,Kawasaki, Yoshikane

, p. 2964 - 2967 (2007/10/02)

The interactions between various acyclic polyethers, RO(CH2CH2O)nR'(R, R'=CH3, Ph), and dimethyltin dichloride (DMTC) in aromatic solvents have been studied by means of 1H NMR spectroscopy.On the basis of a continuous variation method, the formation of the 1:1 complexes between glymes, CH3O(CH2CH2O)nCH3 (n=2, 3, 4), and DMTC was revealed in benzene.The 2J(119Sn-CH3) values suggested distorted trans-octahedral configurations for these complexes.From the statistical consideration of stability constants, it was found that the coordination occurred virtually through neighboring two oxygen atoms in these complexes.DMTC gave the complexes of both 1:1 and 1:2 glyme/DMTC stoichiometry with glymes (n=5, 6) in benzene and with all glymes employed here in toluene and 1-chloronaphthalene.Coexistence of 1:1 and 1:2 species was also encountered for PhO(CH2CH2O)nCH3 (n=3, 4, 5), whereas no appreciable interaction was observed between PhO(CH2CH2O)nPh (n=2, 3, 4) and DMTC.On the basis of these observations, the additional formation of the 1:2 complexes was assumed to be caused by the bulkiness of polyethers.

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