Simendan131741-08-7100 % similar Levosimendan141505-33-162 % similar 6-(4-Aminophenyl)-4,5-dihydro-5-methyl-3(2H)-pyridazinone36725-28-759 % similar Carbonyl cyanide M-chlorophenyl hydrazone555-60-235 % similar 2-Chloro-N-(4-isopropylphenyl)acetamide1527-61-330 % similar