Used in the synthesis of pharmaceutical intermediates, particularly in the development of central nervous system agents. It serves as a building block for bioactive molecules due to its nitrogen-containing heterocyclic structure. Commonly employed in the preparation of compounds with potential antihypertensive and neuroactive properties. Also utilized in research settings for the design of novel isoquinoline-based drugs. Its amine functionality allows for easy modification, making it valuable in medicinal chemistry for structure-activity relationship studies.