Used in pharmaceutical research as a building block for the synthesis of biologically active compounds, particularly in the development of small molecule inhibitors targeting specific enzymes or receptors. It plays a role in the creation of potential therapeutic agents for diseases like cancer, inflammation, and neurological disorders. Additionally, it is utilized in the study of structure-activity relationships (SAR) to optimize drug efficacy and selectivity. Its dihydrochloride form enhances solubility, making it suitable for various experimental and formulation purposes.