Characterization of chemical constituents in Guan Xin II decoction by liquid chromatography coupled with electrospray ionization-mass spectrometry.

  title={Characterization of chemical constituents in Guan Xin II decoction by liquid chromatography coupled with electrospray ionization-mass spectrometry.},
  author={Xue Qiao and Jian Han and Man Xu and Zi-chuan Zhang and Shi-feng Sun and Hui-feng Li and Bao-rong Wang and Min Ye and De-an Guo},
  journal={Planta medica},
  volume={74 14},
Guan Xin II decoction (GX II) is a widely used traditional Chinese medicine (TCM) formula for the treatment of coronary heart diseases. However, the comprehensive chemical analysis of the formulated GX II is not clarified yet. An HPLC-DAD-ESI-MSn method was established to analyze GX II and its five component herbs, respectively. A total of 57 compounds, including phenolic acids, glycosides, flavonoids, and alkaloids were identified or tentatively characterized on the basis of their mass spectra… 

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