DDR1-IN-1 dihydrochloride is primarily used in research settings to study the role of DDR1 (Discoidin Domain Receptor 1) in various biological processes. It serves as a potent and selective inhibitor of DDR1, making it valuable for investigating the receptor's involvement in cancer progression, fibrosis, and other diseases. Researchers utilize this compound to explore its potential therapeutic effects, particularly in inhibiting tumor growth and metastasis by targeting DDR1 signaling pathways. Additionally, it aids in understanding the molecular mechanisms underlying tissue remodeling and fibrosis, offering insights into developing targeted therapies for related conditions. Its application extends to preclinical studies, where it helps evaluate the efficacy and safety of DDR1 inhibition in disease models.