What are the main uses of Apremilast Impurity 28 (CAS: 253168-94-4)?

Apremilast Impurity 28 is primarily used in pharmaceutical research and quality control to identify and analyze impurities in apremilast, an inhibitor of phosphodiesterase 4 (PDE4). It may also be studied for its potential impact on drug efficacy or safety. While not used in food or industrial applications, it is relevant in drug development for compliance with regulatory standards and ensuring product consistency. Its role is limited to analytical purposes in the production of apremilast.