Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) with central nervous system activity. It serves as a building block for compounds exhibiting antipsychotic, antidepressant, or anxiolytic properties due to the presence of the piperazine moiety, which is common in many psychoactive drugs. Its ester functionality allows for easy modification and coupling in multi-step organic syntheses. Also employed in the preparation of novel bioactive molecules for research in medicinal chemistry.