Rosuvastatin sodium is the sodium salt of rosuvastatin, a synthetic statin and a selective competitive inhibitor of HMG-CoA reductase, used as an active pharmaceutical ingredient (API). It is a white to off-white hygroscopic powder with the molecular formula C₂₂H₂₇FN₃NaO₆S and CAS number 287714-41-4. Primarily used to lower cholesterol levels in the blood, it is effective in reducing bad cholesterol (LDL) and triglycerides while increasing good cholesterol (HDL). This helps in preventing cardiovascular diseases such as heart attacks and strokes. It is often prescribed to patients with high cholesterol, familial hypercholesterolemia, or those at risk of atherosclerosis. Additionally, it is used in the management of patients with diabetes or other risk factors for heart disease to improve overall cardiovascular health. Regular use, combined with a healthy diet and exercise, can significantly reduce the risk of heart-related complications. In laboratory and pharmaceutical settings, it serves as a reference standard or intermediate for drug development and research.