This compound, known as norepinephrine or noradrenaline, is a key catecholamine neurotransmitter and hormone in the human body. It plays a critical role in the sympathetic nervous system, promoting vasoconstriction, increasing blood pressure, and modulating heart rate during stress responses. Medically, norepinephrine is administered intravenously as a vasopressor to treat severe hypotension and shock conditions, such as septic shock, cardiogenic shock, or during surgical procedures to maintain hemodynamic stability. It is also widely used in pharmaceutical research and biochemical studies to investigate adrenergic receptor functions, sympathetic signaling pathways, and potential therapies for cardiovascular and neurological disorders.