1,2,5,6-tetrahydroxy-9,10-anthraquinone, 1.2.5.6-Tetraoxy-anthrachinon, 1.2.5.8.-tetrahydroxyanthraquinone, 9,10-Anthracenedione, 1,2,5,6-tetrahydroxy-, 1,2,5,6-Tetrahydroxyanthraquinone, 1,2,5,6-tetrahydroxy-9,10-anthracenedione, 1,2,5,6-Tetrahydroxy-anthrachinon, 1.2.5.8.-Tetraoxyanthrachinon, 1,2,5,6-tetrahydroxyanthracene-9,10-dione, Chinalizarin