Used primarily in research settings as an intermediate in the synthesis of pharmaceuticals and bioactive compounds. Its structure supports the development of nitrogen-containing heterocyclic systems, which are common in medicinal chemistry. It has been explored in the design of kinase inhibitors and other enzyme-targeting agents due to its ability to mimic purine-like scaffolds. Additionally, derivatives of 6-methylphthalazine show potential in the development of fluorescent probes and materials for organic electronics because of their favorable photophysical properties.