Figure 4
From: Flavones from Erythrina falcata are modulators of fear memory
MS 2 spectra of deprotonated molecules of crude extracts (CEs) from the roots of Erythrina falcata using a C18 Luna column as follows: (A) vicenin-2 [M-H] − at m/z 593 (1), (B) vicenin-1 [M-H] − at m/z 563 (2), (C) vitexin [M-H] − at m/z 431 (3), (D) isovitexin [M-H] − at m/z 431 (4), (E) 6-C-glycoside diosmetin [M-H] − at m/z 461 (5) and (F) apigenin [M-H] − at m/z 269 (6). Fragment ions used as structural markers are indicated by arrows.