Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other bioactive molecules. Its boronic ester functionality enables participation in Suzuki-Miyaura cross-coupling reactions, allowing for efficient carbon-carbon bond formation in complex molecule assembly. Commonly employed in medicinal chemistry for constructing libraries of isoquinoline-based compounds with potential neurological and anticancer activity. The presence of the methyl and tetrahydroisoquinoline moieties enhances structural diversity and binding selectivity in drug candidates.