[inhibitor] 4,5,6,7-Tetrachloro-1``H``-indene-1,3(2``H``)-dione is a DUB inhibitor for ubiquitin C-terminal hydrolase L3 with IC50 of 0.6 μM, 125-fold selective to L1. And IC50 to UCH-L1 is 75 μM. ==Biological activity== TCID is a potent and selective inhibitor of ubiquitin C-terminal hydrolase-L3 (UCH-L3) with an IC50 of 0.6 μM. It has ...