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3-[(4-amino-9,10-dioxo-3-phenoxyanthracen-1-yl)amino]-2,4-diethyl-6-methylbenzenesulfonate sodium 4-[(4-amino-9,10-dihydro-9,10-dioxo-3-phenoxy-1-anthryl)amino]-3,5-diethyltoluene-2-sulphonate 3-[[(4-Amino-9,10-dihydro-9,10-dioxo-3-phenoxyanthracen)-1-yl]amino]-2,4-diethyl-6-methylbenzenesulfonic acid sodium salt Benzenesulfonic acid,3-[(4-amino-9,10-dihydro-9,10-dioxo-3-phenoxy-1-anthracenyl)amino]-2,4-diethyl-6-methyl-,sodium salt (1:1) Benzenesulfonic acid, 3-[(4-amino-9,10-dihydro- 9,10-dioxo-3-phenoxy-1-anthracenyl)amino]-2,4-diethyl -6-methyl-, monosodium salt