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Sugar acid with nitrogenous compounds

M. Berthelot. found that many nitrogenous organic compounds furnish ammonia when heated with hydriodic acid and J. Kjeldahl showed that the nitrogen of many nitrogenous compounds is all converted into ammonia or ammonium sulphate when heated with cone, sulphuric acid—in the case of nitro-eompounds and cyanides the reaction is not always quantitative. The reaction proceeds more satisfactorily in the presence of mercury or mercuric oxide, copper, potassium hydrosulphate, sugar, phenol, benzoic acid, and analogous compounds. This reaction has been discussed by C. Arnold, A. Atterberg, C. Budde and C. V. Sehon,... [Pg.165]

Another factor that needs to be discussed is BBB penetration. Such an increase could be solved by chemical modification of the reactivator s structure, for example modifications like withdrawal of the quaternary nitrogen or connection of quaternary moiety with lipophilic compounds, which can serve as carriers into the brain (amino acids, steroids, Alzheimer s disease drugs, sugars, etc.), or the use of special carriers (e.g. nanoparticles, complex systems). However, do we really need to increase the oxime level in the... [Pg.1016]

Bitter taste is elicited by structurally diverse compounds, including phenols, ions, amino acids and peptides, alkaloids, acylated sugars, glycosides, nitrogenous compounds, and thiocarbamates. Taste receptor cells are primarily associated with papillae on the tongue. The signal transduction mechanisms by which taste perception occurs are well not understood, but are the focus of intensive research as reviewed recently (6). [Pg.157]

The discrepancy between molecular-level and NMR measurements of amide nitrogen can best be resolved by using the two techniques interactively. Proteins and N-acetyl amino sugars both yield amino compounds (free amino acids and amino sugars, respectively) on treatment with acid (Figure 8). Therefore, acid hydrolysis of HMW DON should be accompanied by a change in the N-NMR chemical shift from amide to... [Pg.3009]


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Acidic sugars

Nitrogen acids

Sugars compounds

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