(R)-2-amino-N'-(4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl)-2-oxoacetohydrazonoylcyanide;Levosimendan Impurity 4
(R)-2-amino-N'-(4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl)-2-oxoacetohydrazonoylcyanide;Levosimendan Impurity 4