Piperazine-2-carboxylic acid dihydrochloride is primarily utilized in pharmaceutical research and development as a key intermediate in the synthesis of various bioactive compounds. Its structure is particularly valuable in the creation of drugs targeting neurological disorders, as it can influence neurotransmitter systems. Additionally, it serves as a building block in the preparation of peptides and peptidomimetics, which are essential in drug discovery for conditions such as cancer, infections, and metabolic diseases. Its role in medicinal chemistry is further highlighted by its use in the development of enzyme inhibitors and receptor modulators, contributing to advancements in therapeutic treatments.