Cathepsin Inhibitor 1 is widely used in biochemical research to study the role of cathepsin enzymes in various cellular processes. It is particularly valuable in investigating proteolytic activities associated with diseases such as cancer, arthritis, and neurodegenerative disorders. By inhibiting cathepsin activity, researchers can better understand the enzyme's involvement in tumor progression, metastasis, and tissue remodeling. Additionally, it serves as a tool in drug discovery to develop targeted therapies that modulate cathepsin function. Its application extends to studying lysosomal function and autophagy, providing insights into cellular degradation mechanisms.