Used primarily as an intermediate in the synthesis of atorvastatin, a widely prescribed statin medication for lowering cholesterol and triglyceride levels in the blood. Its structure supports key transformations in the production of the active pharmaceutical ingredient, enabling efficient construction of the drug’s core framework. Due to its stereochemical specificity and functional group compatibility, it plays a critical role in ensuring high yield and purity during manufacturing. This compound is not intended for direct therapeutic use but is essential in the controlled, large-scale production of atorvastatin calcium.