tetrasodium 1,5-dihydroxy-9,10-dioxo-4,8-bis[(sulfonatomethyl)amino]-9,10-dihydroanthracene-2,6-disulfonate, EINECS 228-892-9, 2,6-Anthracenedisulfonic acid,9,10-dihydro-1,5-dihydroxy-9,10-dioxo-4,8-bis[(sulfomethyl)amino]-,tetrasodium salt, 2,6-Anthracenedisulfonic acid,9,10-dihydro-1,5-dihydroxy-9,10-dioxo-4,8-bis((sulfomethyl)amino)-,sodium salt (1:4),