Extended Data Fig. 2: HD imaging data analysis window overview for 6,7-dimethoxymethyl-3,4-dihydroisoquinoline.
From: Direct analysis of biotransformations with mass spectrometry—DiBT-MS
Top left square: List of imported acquired files (after protocol Steps 33–37). A preview of each file is shown as a small black image, with a species highlighted. The TIC over the complete slide and for the ions of interest is shown in Fig. S2 (Supplementary Data). The current file that is visualized in the rest of the HD Imaging window is highlighted in blue (bottom of this square). Bottom left square: Molecular ions associated with the selected imported data file, categorized by summed ion intensity (high to low), with the top 1,000 ions displayed. The highest ion selected corresponds to the reactant depicted in Fig. 2. Top right rectangle: Image selection tools to normalize visualization across image files. Additional options include blending results for multiple ions in the same image (data set blend) or producing a smoothed pixel image (image smoothing, linear interpolation). Bottom right rectangle: Mass spectra for the acquired file selected in the top right. The selected ion (highlighted in purple) at m/z 206.13 corresponds to the protonated starting material for the IRED biotransformation displayed in Fig. 2 (and Figs. S2 and S3) and is also the most abundant ion recorded. The corresponding selected ion chromatogram is shown in Fig. S4.
