ABSTRACT
<p><b>OBJECTIVE</b>To analyze the styryllactone components in Goniothalamus cheliensis Hu (Annonaceae).</p><p><b>METHOD</b>UPLC-Q-TOF-MS was used to identify the main styryllactone components in G. cheliensis. The chromatographic separation was performed on ACQU ITY UPLC BEH C18 column and eluted by actonitrile and 0.1% acetic acid in water gradiently. The mass spectrometer equipped with electrospray ionization souce was used as detector under the positive ion modes.</p><p><b>RESULT</b>Twelve styryllactons were identified based on their MS data and published literatures, and the MS fragmentation regularity of the styryllactones was also proposed.</p><p><b>CONCLUSION</b>It is an accurate and effective method to obtain the structural information of styryllactones.</p>