Widely used in peptide synthesis, this compound serves as a protected piperazine building block, enabling the incorporation of functionalized piperazine units into complex molecules. Its Fmoc-protected amine group allows for orthogonal protection strategies in solid-phase peptide synthesis, making it valuable for creating peptide-based drugs and bioactive molecules. The acetic acid side chain provides a handle for further conjugation, useful in linker design for prodrugs or antibody-drug conjugates. Its dihydrochloride salt form enhances solubility and stability during handling and storage, supporting its use in pharmaceutical research and development.