dipotassium 9,10-dihydro-9,10-dioxoanthracene-1,5-disulphonate

9,10-Dihydro-9,10-dioxoanthracene-1,5-di(sulfonic acid potassium) salt

9,10-Dihydro-9,10-dioxo-1,5-anthracenedisulfonic acid dipotassium salt