Synonyms: 2-Anthracenesulfonicacid, 9,10-dihydro-1,3,4-trihydroxy-9,10-dioxo-, monosodium salt (8CI,9CI);2-Anthracenesulfonic acid, 9,10-dihydro-1,3,4-trihydroxy-9,10-dioxo-, sodiumsalt (7CI); C.I. 58210; Purpurinsulfonate; Sodium1,2,4-trihydroxy-9,10-dioxo-3-anthracenesulfonate; Sodium purpurinesulfonate;Sodium purpurinsulfonate