Used primarily in the pharmaceutical industry, Sofosbuvir Impurity I plays a critical role in quality control and regulatory compliance. It serves as a reference standard during the development and manufacturing of Sofosbuvir, an antiviral medication used to treat hepatitis C. By identifying and quantifying this impurity, manufacturers ensure the drug's safety, efficacy, and purity. It is also utilized in research and development to study the degradation pathways and stability of Sofosbuvir, helping to optimize formulation processes. Additionally, it aids in meeting regulatory requirements by providing essential data for drug approval submissions.