MG-115 is primarily used in biochemical research as a proteasome inhibitor. It is employed to study the role of the proteasome in cellular processes, particularly in protein degradation and regulation. Researchers utilize MG-115 to investigate its effects on cell cycle progression, apoptosis, and the accumulation of misfolded proteins. This compound is valuable in understanding diseases related to proteasome dysfunction, such as cancer and neurodegenerative disorders. Additionally, MG-115 helps in exploring potential therapeutic strategies targeting the ubiquitin-proteasome pathway. Its application extends to laboratory experiments aimed at elucidating mechanisms of protein homeostasis and cellular stress responses.