Histone deacetylase (HDAC) inhibitor (IC50 = 7.5 to 16 nM). At low concentrations reduces release of pro-inflammatory cytokines, including TNFα, INFγ, IL-1α and IL-1β, from LPS stimulated PBMCs in vitro. Exhibits anti-inflammatory effects in vivo. Improves functional recovery and attenuates tissue damage in a mouse model of traumatic brain injury. Purity 98%. MW (observed): 457.95