1,3,6,7-Tetrahydroxy-2,5-bis(3-methyl-2-butenyl)-9H-xanthen-9-one 2,8-Bis(3-methyl-2-butenyl)-1,3,6,7-tetrahydroxy-9H-xanthen-9-one 31271-07-5 9H-Xanthen-9-one, 1,3,6,7-tetrahydroxy-2,8-bis(3-methyl-2-butenyl)- gamma-Mangostin