Identification of regioisomers of methylated kaempferol and quercetin by ultra high performance liquid chromatography quadrupole time-of-flight (UHPLC–QTOF) tandem mass spectrometry combined with diagnostic fragmentation pattern analysis

Chengying Ma, Haipeng Lv, Xinzhong Zhang, Zongmao Chen, Jiang Shi, Meiling Lü, Zhi Lin

Analytica Chimica Acta · 2013 · 41 citations · 25 references

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