4,5-Diepipsidial A is a terpenoid compound utilized in biochemical research for its potential neuroprotective properties, particularly in studies related to Alzheimer’s and other neurodegenerative diseases, where it modulates oxidative stress and inflammation in neuronal cells. It also demonstrates anti-inflammatory and antimicrobial activities in cell culture models, with the ability to inhibit enzymes such as cyclooxygenase-2 (COX-2) involved in chronic inflammation. Furthermore, it is investigated for its role in regulating apoptosis in certain cancer cells, positioning it as a promising lead compound for future drug development. Primarily employed as a biochemical tool in laboratory settings to probe cellular pathways related to stress response, cell survival, inflammation, and antimicrobial defense, it is not used in commercial or industrial applications due to limited availability and ongoing research status.