sodium 4,8-diamino-9,10-dihydro-1,5-dihydroxy-6-(4-hydroxyphenyl)-9,10-dioxoanthracene-2-sulphonate

4,8-Diamino-1,5-dihydroxy-6-(p-hydroxyphenyl)-9,10-dihydro-9,10-dioxoanthracene-2-sulfonic acid sodium salt