Used in pharmaceutical research as a key intermediate in the synthesis of cysteine protease inhibitors, particularly targeting enzymes like cathepsin K and calpain. These inhibitors have potential therapeutic applications in treating osteoporosis, arthritis, and neurodegenerative diseases. The compound’s structure allows for strong binding to active sites of target enzymes, enhancing inhibitory activity. Also employed in the development of anti-inflammatory agents due to its ability to modulate cellular pathways involved in inflammation. Its naphthyl and methylthio groups contribute to improved lipophilicity and membrane permeability, making it suitable for in vitro and in vivo studies.