The target emitter DDiKTa-F was obtained via a four-step reaction sequence (Scheme S1) in 12% overall yield. The identity and purity of DDiKTa-F were established through a combination of 1 H and 13 C NMR spectroscopy, melting point determination, high-resolution mass spectrometry, elemental analysis, and high-pressure liquid chromatography (HPLC), (cf. Figures ).