Fig. 1

Chemical structures of PET tracers containing (3-[18F]fluoro-2-hydroxy)propyl ([18F]FHP) moiety used in clinical applications. [18F]FMISO (Bruehlmeier et al. 2004; Eschmann et al. 2005); [18F]THK-5351 (Harada et al. 2016; Tago et al. 2016); [18F]FC1195S (Byun et al. 2017; Lee et al. 2016; Yang et al. 2016); [18F]SMBT-1 (Harada et al. 2021); [18F]PM-PBB3 (Tagai et al. 2021)