Gentiacaulein

Gentianacaulein

2,8-Dihydroxy-1,6-dimethoxy-9H-xanthen-9-one

1,7-Dihydroxy-3,8-dimethoxy-9H-xanthene-9-one

1,6-Dimethoxy-2,8-dihydroxy-9H-xanthene-9-one