2',3,5,6',7-Pentahydroxyflavanone

(2R,3R)-2',3,5,6'7-pentahydroxyflavanone(2',3,5,6',7-Pentahydroxyflavanone) can inhibit the histamine release from rat mast cells induced by compound 48/80. It inhibits the lipid peroxide formation by Feand ascorbic acid, it also inhibits the lipid peroxide formation induced by adenosine diphosphate and reduces nicotinamide adenine dinucleotide phosphate in rat liver homogenate.