BC-23 (NSC 45382) is a proteasome inhibitor. BC-23 exhibits good inhibition of CT-L activity of the proteasome and is selective for malignant over normal cells.
References:
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[2]. Zhang Q, et, al. Enhancement of Radiation Sensitivity in Lung Cancer Cells by a Novel Small Molecule Inhibitor That Targets the β-Catenin/Tcf4 Interaction. PLoS One. 2016 Mar 25;11(3):e0152407.