Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors. It serves as a building block in organic reactions where the amidine group acts as a bioisostere for esters or amides, enhancing metabolic stability in drug candidates. Commonly employed in the preparation of thrombin and trypsin inhibitors due to its ability to bind effectively to serine protease active sites. Also utilized in the design of agrochemicals and in biochemical research as a selective enzyme inhibitor. Its bromo substituent allows for further functionalization via cross-coupling reactions, expanding its utility in medicinal chemistry.