Daclatasvir Impurity C is primarily used in the pharmaceutical industry for quality control and regulatory compliance. It serves as a reference standard during the analysis and validation of Daclatasvir, ensuring the drug's purity and safety. This impurity is critical for identifying and quantifying potential contaminants in the manufacturing process, helping to maintain consistent product quality. Additionally, it aids in the development of analytical methods, enabling precise detection and measurement of impurities in Daclatasvir formulations. Its role is essential in meeting stringent regulatory requirements and ensuring the efficacy of the final drug product.