Identification of chemical constituents in cuscuta chinensis using HPLC-ESI/Q-TOF MS/MS

Wen-Lan Li, Zhang Yan, Bai Jing, Xiang Zheng, Ding Jing-Xin, Ji Yu-Bin
AIM: To identify the chemical constituents in Cuscuta Chinensis. METHODS: A High-performance liquid chromatography (HPLC) method combined with quadrupole-time-of-flight-mass spectrometry (QTOF-MS) has been developed for precise separation and structural identification of components in Cuscuta Chinensis. Mass spectrometry was performed in reflective time-of-flight using electron spraying ionization in negative mode. Accurate mass measurements (less than 5 ppm error) for molecular ions and
more » ... eristic fragment ions could represent reliable identification criteria for these compounds. RESULTS: Combination of MS and the information provided by the part of the standard, and 22 components are identified, such as:quercetin-3-O-(2