Neochlorogenic acid (3-CQA) (4), chlorogenic acid (5-CQA) (6), apigenin (30), luteolin (31), quercetin (35), isoquercitrin (49), hyperoside (50), luteolin-7-O-rutinoside (54), and rutin (55) were obtained from Extrasynthese (Genay, France). 3,4-O-diCQA (12), 3,4-O-diCQA (13), diosmetin (33), rhamnetin (37), isorhamnetin (38), luteolin-7-O-glucuronide (47), isorhamnetin-7-O-glucoside (51), and isorhamnetin-3-O-rutinoside (57) were purchased from PhytoLab (Vestenbergsgreuth, Germany).
The UHPLC-ESI/HRMS analyses were carried out on a Q Exactive Plus heated electrospray ionization (HESI-II) – high resolution mass spectrometer (HRMS) (ThermoFisher Scientific, Inc., Bremen, Germany) equipped with an ultra-high-performance liquid chromatography (UHPLC) system Dionex Ultimate 3000RSLC (ThermoFisher Scientific, Inc.) [60 (link)].
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