TNF-α-IN-8 (compound I-42) is an isoindole-imide-based inhibitor of tumor necrosis factor-alpha (TNF-α) with applications in researching various diseases including cancer, heart disease, osteoporosis, and autoimmune disorders. Additionally, this compound serves as a click chemistry reagent, possessing an Azide group that can participate in copper-catalyzed azide-alkyne cycloaddition (CuAAc) or strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Alkyne, DBCO, or BCN groups.