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- W2073336747 abstract "From a number of solutions of sympathomimetic amines in (a) water or (b) 10 N hydrochloric acid, chromatographed on thin layer of alumina, cellulose, or silica gel using a water-hydrochloric acid-phenol solvent system, only two produced multiple spots when the solvent system and an amine solution in excess hydrochloric acid, on cellulose layers, were used. The appearance of multiple spots does not depend upon the chemical structure of the compounds used, since the phenomenon was not reproduced when alumina or silica gel layers were used. The combination of adsorption and partition forces, the presence of the carboxyl groups in prepared cellulose, and the continuity of the thin layer are the main factors leading to the formation of multiple spots. From a number of solutions of sympathomimetic amines in (a) water or (b) 10 N hydrochloric acid, chromatographed on thin layer of alumina, cellulose, or silica gel using a water-hydrochloric acid-phenol solvent system, only two produced multiple spots when the solvent system and an amine solution in excess hydrochloric acid, on cellulose layers, were used. The appearance of multiple spots does not depend upon the chemical structure of the compounds used, since the phenomenon was not reproduced when alumina or silica gel layers were used. The combination of adsorption and partition forces, the presence of the carboxyl groups in prepared cellulose, and the continuity of the thin layer are the main factors leading to the formation of multiple spots." @default.
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- W2073336747 date "1967-07-01" @default.
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- W2073336747 title "Examination of structural effect on thin-layer chromatographic multiple spot formation of sympathomimetic amines in the presence of hydrochloric acid" @default.
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- W2073336747 doi "https://doi.org/10.1002/jps.2600560726" @default.
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