Quetiapine Dimer Impurity is primarily used in the pharmaceutical industry for quality control and analytical purposes. It serves as a reference standard in the development and validation of analytical methods to ensure the purity and safety of quetiapine formulations. Researchers and manufacturers utilize this impurity to identify, quantify, and monitor its presence during the production process, ensuring compliance with regulatory standards. Additionally, it aids in studying the stability and degradation profile of quetiapine, contributing to the development of more effective and safer drug products.