1,7-Anthrachinondisulfonsaeure, Anthraquinone-1,7-disulfonic acid, anthraquinone-1,7-disulphonic acid, 1,7-Anthracenedisulfonic acid, 9,10-dihydro-9,10-dioxo-, 9,10-Dioxo-9,10-dihydro-anthracen-1,7-disulfonsaeure, 9,10-Dioxo-9,10-dihydro-anthracene-1,7-disulfonic acid, Anthrachinon-disulfonsaeure-(1.7), 9,10-dioxoanthracene-1,7-disulfonic acid