1-Amino-4-(p-butylanilino)-2-anthraquinonesulfonic acid, sodium salt 12219-37-3 12269-82-8 2-Anthracenesulfonic acid, 1-amino-4-((4-butylphenyl)amino)-9,10-dihydro-9,10-dioxo-, monosodium salt 26412-62-4 71807-41-5 EINECS 235-545-5 Sodium 1-amino-4-((4-butylphenyl)amino)-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate