Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of central nervous system (CNS) agents. Its structure supports the creation of selective receptor modulators, making it valuable in research for neurological and psychiatric disorders. Commonly employed in medicinal chemistry for constructing isoquinoline-based bioactive molecules with potential analgesic, antihypertensive, or neuroprotective effects. Also utilized in the preparation of labeled compounds for metabolic and binding studies.