Used in pharmaceutical research as a building block for synthesizing bioactive molecules, particularly in the development of central nervous system agents. Its structure supports the creation of compounds with potential neuroactive properties, including those targeting serotonin and dopamine receptors. Also employed in the synthesis of peptide-like structures due to the diketopiperazine core, which mimics natural peptide motifs and enhances metabolic stability. Commonly found in early-stage drug discovery for neurological disorders and behavioral conditions.