[3,2-b]
Order
39011-96-6
5-Hydroxy-8-methoxy-2,2-dimethyl-7-(3-methyl-2-butenyl)-2H,6H-pyrano[3,2-b]xanthen-6-one
Order
35349-68-9
5,9-Dihydroxy-8-methoxy-2,2-dimethyl-7-(3-methyl-2-buten-1-yl)-2H ,6H-pyrano[3,2-b]xanthen-6-one