大黄素

6-formyl-1,3,8-trihydroxyanthracene-9,10-dione

(4,5-diacetyloxy-7-methyl-9,10-dioxoanthracen-2-yl) acetate

1,8-diacetoxy-3-hydroxyanthracene-9,10-dione-6-carbaldehyde

1,3,8-triacetoxyanthracene-9,10-dione-6-carbaldehyde