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96409-74-4

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96409-74-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 96409-74-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,4,0 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 96409-74:
(7*9)+(6*6)+(5*4)+(4*0)+(3*9)+(2*7)+(1*4)=164
164 % 10 = 4
So 96409-74-4 is a valid CAS Registry Number.

96409-74-4Relevant articles and documents

Electron Donor-Acceptor Compounds, XXXVIII. Electron Donor-Acceptor Metacyclophanes: Synthesis, Structure, and Charge-Transfer Spectra

Staab, Heinz A.,Schanne, Lothar,Krieger, Claus,Taglieber, Volker

, p. 1204 - 1229 (2007/10/02)

Donor-acceptor metacyclophanes 1-4 as well as 24 were synthesized via the correspondingly substituted 2,11-dithiametacyclophanes 8, 13, and 25 and their disulfone derivatives.The anti-compound 1 and the syn-isomer 2 were isolated and characterized.The attempt of the analogous synthesis of 5/6 via 21 and 22 failed since with loss of the intraanular substituents and by transanular C-C formation the tetrahydropyrene derivative 23 was formed.For spectroscopic comparison 27 was prepared via 28.- X-Ray structure analyses of 21, 24, and 25 were performed.The molecular structures of these compounds are discussed under the aspects of sterical strain and donor-acceptor overlap.The structure analyses confirm the assignment to the syn- and anti-series as derived from 1H NMR.- Absorption spectra of 1, 2, 3, and 24 were measured; especially the surprising absorption behaviour of the isomers 1 and 2 with very different donor-acceptor overlap was of interest.Determination of the solvent dependence of fluorescence made sure that the absorptions dealt with are indeed charge-transfer transitions.

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