Table 1.

The binding affinity of compounds 7–12 on the TSPO receptor.

Compounds name	Binding affinity (kcal/mol)	Key Residues
12 ([131I]BPF-02)	−21.6	Val 26, Ala 110, Ala 23, Leu 49, Trp 107, Trp 95, Leu 114, Trp 143, Gly 19, Asp 111
11 ([131I]BPF-01)	−21.7	Val 26, Ala 23, Arg 46, Leu 49, Trp 107, Trp 95, Gly 19, Hie 43, Asp 111
10 (BPF-02)	−21.7	Val 26, Arg 46, Leu 49, Trp 107, Leu 150, Hie 43
9 (BPF-01)	−22.4	Val 26, Ala 110, Trp 143, Leu 150, Hie 43, Asp 111
8	−10.8	Ala 110, Arg 46, Gly 19
7	−10.6	Val 26, Ala 110, Ala 23, Leu 114