Fig. 1From: 18F-labeled tracers targeting fibroblast activation proteinOverview of the synthesized precursors discussed in this study. The corresponding log D values were determined by detection of the radiolabeled tracer in 1-octanol and phosphate buffered saline (pH 7). For values labeled with an asterix, the log D was calculated from the relative content of the non-radioactive reference standards in the 1-octanol and the water phase by HPLC analysis and peak integrationBack to article page