英文别名Levosimendan Impurity 14; (S)-1,4-Dihydro-4beta-methyl-3-[4-[2-(dicyanomethylene)hydrazino]phenyl]pyridazin-6(5H)-one; 2-[[4-[(4S)-4-methyl-6-oxo-4,5-dihydro-1H-pyridazin-3-yl]phenyl]hydrazinylidene]propanedinitrile; 2-[2-[4-[(4S)-1,4,5,6-Tetrahydro-4-methyl-6-oxo-3-pyridazinyl]phenyl]hydrazinylidene]propanedinitrile; (S)-Simendan; (S)-(4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl)carbonohydrazonoyl dicyanide; 2-[[4-[(4S)-4-methyl-6-oxo-4,5-dihydro-1H-pyridazin-3-yl]phenyl]hydrazono]propanedinitrile; (S)-Levosimendan; Propanedinitrile, 2-[2-[4-[(4S)-1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl]phenyl]hydrazinylidene]-; (S)-N-(4-(4-Methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl)carbonohydrazonoyl dicyanide 
