Notes: Garcinone D is a xanthone that has been found in G. mangostana and has diverse biological activities.{54166} It increases proliferation of C17.2 neural progenitor cells (NPCs) when used at a concentration of 5 µM, an effect that can be reduced by inhibition of the antioxidative transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2). It increases phosphorylation of STAT3 and cyclin D1 and the protein levels of Nrf2 and heme oxygenase-1 (HO-1) in a concentration-dependent manner. Garcinone D (3 µM) inhibits aggregation of amyloid-β (1-42) (Aβ42; Item No. 20574) in vitro and inhibits beta-secretase 1 (BACE1) by 62.7% when used at a concentration of 100 µM.{54167} It scavenges peroxynitrite radicals with an IC50 value of 26.4 µM.{54168}