5-Phenylpyridazin-3-amine is primarily utilized in the field of medicinal chemistry and pharmaceutical research. It serves as a key intermediate in the synthesis of various biologically active compounds. Its structure is often exploited to develop molecules with potential therapeutic properties, particularly in the design of drugs targeting central nervous system disorders, cardiovascular diseases, and inflammatory conditions. Additionally, it is used in the preparation of heterocyclic compounds, which are studied for their antimicrobial, anticancer, and antioxidant activities. Researchers also explore its derivatives for their potential as enzyme inhibitors, making it a valuable scaffold in drug discovery and development.