Synonyms: Streptonigrin dimer;STN-NH(CH2)3NH(CH2)4NH(CH2)3NH-STN;99533-81-0;2-Pyridinecarboxamide, N,N'-(1,4-butanediylbis(imino-3,1-propanediyl))bis(5-amino-6-(7-amino-5,8-dihydro-6-methoxy-5,8-dioxo-2-quinolinyl)-4-(2-hydroxy-3,4-dimethoxyphenyl)-3-methyl-;2-Pyridinecarboxamide, N,N'-[1,4-butanediylbis(imino-3,1-propanediyl)]bis[5-amino-6-(7-amino-5,8-dihydro-6-methoxy-5,8-dioxo-2-quinolinyl)-4-(2-hydroxy-3,4-dimethoxyphenyl)-3-methyl-