Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system (CNS) active agents. Its structure supports the creation of compounds with potential antihypertensive and neuroactive properties. Commonly employed in research settings for designing analogs that modulate neurotransmitter activity. Also utilized in the preparation of selective enzyme inhibitors due to its rigid tetrahydroisoquinoline core, which enhances binding affinity to biological targets.