Used in the synthesis of purine-based pharmaceuticals, particularly in the development of antiviral and anticancer agents. Acts as an intermediate in modifying nucleobase structures to enhance binding affinity with target enzymes or receptors. Commonly employed in medicinal chemistry for constructing kinase inhibitors and nucleoside analogs. Its chloro and methyl functional groups allow selective substitutions, enabling fine-tuning of biological activity. Also utilized in research settings to study purine metabolism and enzyme inhibition.