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52399-80-1

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52399-80-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52399-80-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,3,9 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 52399-80:
(7*5)+(6*2)+(5*3)+(4*9)+(3*9)+(2*8)+(1*0)=141
141 % 10 = 1
So 52399-80-1 is a valid CAS Registry Number.

52399-80-1Downstream Products

52399-80-1Relevant articles and documents

Solution structure of some λ3 iodanes: An 17O NMR and DFT study

Mocci, Francesca,Uccheddu, Gianluca,Frangia, Angelo,Cerioni, Giovanni

, p. 4163 - 4168 (2008/02/05)

(Figure Presented) The structure of a series of I-O bonded bis(acyloxy)iodoarenes and benzoiodoxolones in chloroform solution has been investigated by 17O NMR spectroscopy and by density functional theory (DFT) calculations, employing the PBE0 functional together with the LANL2DZ basis set extended with polarization (d) and diffuse (p) functions. This combined approach allowed us to ascertain that, although these classes of λ3 iodanes maintain in chloroform solution their solid state "T-shaped" structure, a degenerate [1,3] sigmatropic shift of iodine between the two oxygens of the acyloxy groups occurs in solution. The energy barrier involved in this process differs in the two classes, thus causing significant differences in the 17O NMR spectra, at room temperature, of the two classes of compounds.

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