74091-55-7 Palladate(2-), bis(9,10-dihydro-3,4-dihydroxy-9,10-dioxo-2-anthracenesulfonato(2-)-O(4),O(10))-, disodium Palladium di-(sodium alizarine monosulfonate) Palladium sulfonated alizarine Pd(QS)2