Rapid Screening of Chemical Constituents in Rhizoma Anemarrhenae by UPLC-Q-TOF/MS Combined with Data Postprocessing Techniques
The specific fragmentation process of chalcone flavonoids, take 2′,4′,4-trihydroxychalcone as an example: the fragment ion of m/z 255 [M-H]− is molecular ion and the fragment ions at m/z 135 and 119 resulting from separation of A and B rings.
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