This compound is primarily used in the pharmaceutical industry as a reference standard in the quality control and analytical testing of atorvastatin, a widely prescribed cholesterol-lowering medication. It helps in identifying and quantifying impurities during the manufacturing process, ensuring the final product meets regulatory standards for safety and efficacy. Additionally, it aids in research and development efforts to understand the degradation pathways and stability of atorvastatin, contributing to the improvement of drug formulations and storage conditions.