Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of nitrogen-containing heterocyclic drugs. It plays a role in the preparation of bioactive molecules with potential antitumor, antiviral, and antimicrobial properties. Its reactivity allows for functionalization in medicinal chemistry research, especially in constructing kinase inhibitors and other enzyme-targeted therapeutics. Also utilized in organic synthesis for building complex phthalazine-based structures.