¹ H NMR Elucidation of Observed Stable Sugar‐NaCl‐water Complexes in Aqueous Solution**

Hyaluronan forms specific stable tertiary structures in aqueous solution: a 13C NMR study.

13C NMR spectra of aqueous solutions of hyaluronan (HA) of high molecular mass, before and after digestion with testicular hyaluronidase, and of hyaluronan methyl ester were obtained at 125.8 MHz. Carbonyl peaks were assigned by using selective decoupling techniques. Spectra of digested and undigested HA showed sharp signals, except for that assigned to the acetamido carbonyl carbon in the high...

Self - Aggregation of Itopride HCl in Aqueous Solution : 1 H NMR and Conductivity Study

The self-aggregation of itopride HCl in water at different temperatures has been studied. Critical aggregation concentrations (CAC) and the degree of ionization (α) have been determined by conductivity measurements over the temperature range from 293.15 – 318.15 K. The thermodynamics parameters of self-aggregation; the standard Gibbs energy change G°m, the standard enthalpy change, ∆ H°m, and ...

Thermodynamic study of Ion pairing in Aqueous solution of 〖BaF〗_2 by (_^19)F-NMR

The ion-pair association constant values, related to the reaction +  were determined by means of the NMR spectroscopy. The values of the thermodynamic functions of the ion pairing process were calculated on the basis of the NMR results. In addition, the association entropy was found to be dependent on the temperature. Comparing the experimental data and the Fuoss theory it is found that  ion-pa...

NMR investigation of self-association of vanillin in aqueous solution

NMR and fluorometric characterization of mithramycin in aqueous solution.

The assignments for the resonances in the 1H and 13C NMR spectra of mithramycin in aqueous solution have been determined by a combination of 2D NMR methods. Specific NOESY contacts observed between different moieties indicate that the drug assumes a compact conformation in aqueous solution. Fluorescence measurements are consistent with a compact structure for mithramycin in water and confirm th...