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PubMed1975

Chromatographic separation of conformers of substituted asymmetric nitrosamines.

The syn and anti conformers of N-nitrosoproline, N-nitrososarcosine and N-nitroso-2-(ethylamino)-ethanol, have been separated by liquid chromatography. These conformers result from hindered rotation about the N-N bond. Separation was achieved using adsorption, reversed-phase, and ion-exchange modes. For the nitroso-amino acids, a shift in the equilibrium conformer concentration was observed with changes in pH.

Chromatography↗
PubMed1988

High-performance liquid chromatography separations of nitrosamines. III. Conformers of N-nitrosamino acids.

The separation of a selected group of N-nitrosamino acids and their syn and anti conformers by high-performance liquid chromatography using an alpha-cyclodextrin bonded silica gel column and a mobile phase of acetonitrile-triethylammonium acetate was achieved. The effects of mobile phase pH and concentration of acetonitrile on resolution and elution times are also reported.

Chromatography, High Pressure Liquid↗