(S)-(-)-Piperazine-2-carboxylic acid dihydrochloride is widely used in pharmaceutical research and development, particularly in the synthesis of chiral compounds. It serves as a key intermediate in the production of various drugs, including those targeting neurological disorders and cardiovascular diseases. Its chiral nature makes it valuable in creating enantiomerically pure substances, which are crucial for ensuring the efficacy and safety of medications. Additionally, it is utilized in the preparation of peptide-based drugs, where its structural properties help in stabilizing peptide chains and enhancing their biological activity. This compound is also employed in biochemical studies to investigate enzyme mechanisms and receptor interactions, providing insights into drug design and therapeutic targets.