Used in the synthesis of pharmaceutical intermediates, particularly in the development of isoquinoline-based bioactive compounds. Its structure serves as a building block for creating potent kinase inhibitors and antimicrobial agents. The chloro and ester functional groups allow for selective modifications, enabling the introduction of various substituents during drug design. Commonly employed in medicinal chemistry research for optimizing lead compounds targeting inflammatory diseases and certain cancers. Also utilized in agrochemical research for developing novel pesticide candidates due to its heterocyclic stability and reactivity profile.