Fig. 1
From: An in silico MS/MS library for automatic annotation of novel FAHFA lipids
Experimental and in silico spectra of the model compound 9-PAHSA in negative ionization mode. a MS/MS spectra with collision energy of 20 V at 4 spectra/s acquired by QTOF; b MS/MS spectra with collision energy of 40 V at 1 spectrum/s acquired by QTOF, and c MS/MS and MS3 spectra acquired by LTQ with 20 % collision energy. The actual relative intensities for m/z 127 and 155 in figure b) are both 0.2 %