United States Pharmacopeia (USP) Reference Standard Synonym(s): (4 R ,4a S ,12a S )-4-(Dimethylamino)-1,4,4a,5,12,12a-hexahydro-3,10,11,12a-tetrahydroxy-6-methyl-1,12-dioxo-2-naphthacenecarboxamide monohydrochloride Empirical Formula: C22H22N2O7 -+ HCl...