Used as a key intermediate in organic synthesis, particularly in pharmaceuticals and agrochemicals. Its structure supports the development of bioactive molecules due to the presence of the isoquinoline core, which is common in compounds with medicinal properties. Frequently employed in coupling reactions to build complex heterocyclic systems. Also utilized in research settings for developing novel kinase inhibitors and antimicrobial agents. Its alkyne functionality allows for further modification via click chemistry, making it valuable in drug discovery and material science.