Used as a potent inhibitor of nitric oxide synthase (NOS), this compound helps researchers study the role of nitric oxide in biological systems. It is widely applied in cardiovascular and neuroscience research to modulate blood pressure, vascular tone, and neuronal signaling. By blocking the production of nitric oxide, it allows investigation into inflammatory processes, neurotransmission, and endothelial function. Commonly used in experimental models of shock, ischemia, and neurodegenerative diseases to assess the impact of reduced nitric oxide levels.