Simendan

**Definition:** A hydrazone and pyridazine derivative; the levo-form is a phosphodiesterase III inhibitor, calcium-sensitizing agent, and inotropic agent that is used in the treatment of HEART FAILURE.

**Tree numbers:** - D02.442.288.610 - D03.383.710.802

**Synonyms:** - ((4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl)hydrazono)propanedinitrile