Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other bioactive molecules. Its structure allows for selective functionalization, making it valuable in medicinal chemistry for creating compounds with antitumor, antiviral, or anti-inflammatory activity. Commonly employed in cross-coupling reactions to introduce the isoquinoline core into larger drug-like molecules. Also utilized in agrochemical research for designing novel pesticides due to the stability and reactivity imparted by the trifluoromethyl and chloro groups.