Qualitative and Quantitative Analysis for the Chemical Constituents of<i> Tetrastigma hemsleyanum</i> Diels et Gilg Using Ultra-High Performance Liquid Chromatography/Hybrid Quadrupole-Orbitrap Mass Spectrometry and Preliminary Screening for Anti-Influenza Virus Components

<div>Secondary mass spectrum of chlorogenic acid (a) and neochlorogenic acid (b). As shown in (a), the cleavage fragment strength of the m/z was 191&gt; 179&gt;135. In (b), the peak m / z = 191 has the strongest intensity, and the peaks m / z179 and m / z135 have the same intensity and are very weak.</div>

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Figure 2: Qualitative and Quantitative Analysis for the Chemical Constituents of<i> Tetrastigma hemsleyanum</i> Diels et Gilg Using Ultra-High Performance Liquid Chromatography/Hybrid Quadrupole-Orbitrap Mass Spectrometry and Preliminary Screening for Anti-Influenza Virus Components 

Figure 2 | Qualitative and Quantitative Analysis for the Chemical Constituents of Tetrastigma hemsleyanum Diels et Gilg Using Ultra-High Performance Liquid Chromatography/Hybrid Quadrupole-Orbitrap Mass Spectrometry and Preliminary Screening for Anti-Influenza Virus Components 