Off white or slight yellow powder

Water≤2.0%

Residue on ignition≤0.2%

Heavy metals≤20ppm

Assay≥98.5%

Milrinone is non-digitalis, non-catecholamines cardiac drug , it is representative drug of phosphodiesterase inhibitor,selectively inhibiting phosphodiesterase in myocardial cells, increasing intracellular cyclic adenosine monophosphate, alter intracellular calcium transport, thereby increasing myocardial contractility and expanding peripheral vessel .?