Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its ability to form stable heterocyclic structures that interact with biological targets. Commonly employed in the preparation of bioactive molecules with anti-inflammatory, antiviral, and antitumor activities. Its hydroxyl and chloro functional groups allow for selective modifications, enabling the optimization of drug candidates in structure-activity relationship studies.