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[Determination of synephrine in oriental pharmaceutical decoctions containing Aurantii nobilis pericarpium by
K Hashimoto1, T Yasuda, K Ohsawa
1Tohoku College of Pharmacy, Miyagi, Japan.
Abstract:
A simple method using ion-pair high-performance liquid chromatography was established for the rapid and precise determination of synephrine in oriental pharmaceutical decoctions containing Aurantii Nobilis Pericarpium. An ODS column and a mixture of water, acetonitrile, sodium dodecyl sulfate and phosphoric acid (65:35:0.5:0.1) as a mobile phase were used for the separation. Synephrine was eluted without interference by other co-existing components within 15 min.