A Summary of the Newer Generation of TSPO Radiotracers
| Chemical class | Radioligand | Binding affinity |
| Indole acetamides | 11C-SSR180575 | — |
| Vinca alkaloids | 11C-vinpocetine | — |
| Phenoxyarylacetamides | 11C-PBR28 | 2.2–52 nM in humans |
| 18F-FEDAA1106 | — | |
| 18F-PBR06 | — | |
| 18F-FEPPA | — | |
| 11C-DAA1106 | <1 nM in humans | |
| Imidazopyridine acetamides | 11C-DPA713 | 1.3 nM in mice |
| 18F-PBR111 | — | |
| Dihydro-9H-purinacetamides | 11C-DAC | — |
| 11C-AC-5216 | — | |
| Pyrazolopyrimidines | 18F-DPA-714 | — |