3-(acetoxymethyl)-9,10-dioxo-9,10-dihydroanthracene-1,8-diyl diacetate;1,8-Bis(acetyloxy)-3-[(acetyloxy)methyl]-9,10-anthracenedione;1,8-Dihydroxy-3-(hydroxymethyl)anthraquinone Triacetate; Aloe-emodin Impurity A;Triacetyl Aloe-emodin (Impurity A); (Aloe Emodin Impurity A)