Neoisoliquiritin is a natural product from Glycyrrhiza uralensis.

QS-21, an immunostimulatory saponin, is a powerful vaccine adjuvant that stimulates both Th2 humoral and Th1 cell-mediated immune responses by interacting with antigen presenting cells (APCs) and T cells.

Methoxatin disodium salt an aromatic tricyclic o-quinone is a redox cofactor for bacterial dehydrogenases. It is an efficient electron transfer catalyst from a number of organic substrates to molecular oxygen (O2) constructing quinoprotein model reactions.