Noncompetitive inhibitor of PCAF and p300 histone acetyltransferase (HAT) activity (IC50 values are ~5.0 and ~8.5 μM respectively). Inhibits NF-κB activation. Also reported to selectively activate Aurora kinase A-mediated phosphorylation of histone H3 and to inhibit protein SUMOylation. Exhibits antitumor, antimicrobial and antioxidant activity. Purity 97%. MW (observed): 348.52