Fig. 4 in The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves

Fig. 4. Plausible MS/MS fragment ion structures of truxillate forms (1, 5–7) and their precursors (9, 10) during the fragmentation process in negative and positive ion mode. It showed that the main fragmentation pattern of truxillate configurations was symmetric dissociation.