Piperazine-2-carbonitrile dihydrochloride is primarily utilized in the field of organic synthesis and pharmaceutical research. It serves as a key intermediate in the preparation of various pharmacologically active compounds, particularly those targeting neurological and psychiatric disorders. Its structural framework is often incorporated into molecules designed to interact with receptors in the central nervous system, making it valuable for developing drugs such as antipsychotics, antidepressants, and anxiolytics. Additionally, the compound is employed in the synthesis of heterocyclic compounds, which are widely explored for their potential therapeutic applications in treating infections, cancer, and inflammatory diseases. Its versatility and reactivity make it a crucial component in medicinal chemistry and drug discovery processes.