Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system agents and antipsychotic drugs. It serves as a building block in the preparation of isoquinoline-based bioactive molecules due to its ability to participate in various coupling and substitution reactions. Its methoxy-substituted structure enhances electron density, improving reactivity in catalytic reactions and enabling selective functionalization. Commonly employed in research settings for designing novel therapeutic compounds with improved metabolic stability and binding affinity.