1-Boc-isonipecotic acid is widely used in organic synthesis as a key intermediate in the preparation of pharmaceuticals, particularly in the development of drugs targeting the central nervous system. Its Boc-protected amine group allows for selective deprotection, making it valuable in peptide synthesis and the creation of complex molecules. It is also employed in the synthesis of bioactive compounds, including inhibitors and receptor modulators, due to its structural versatility. Additionally, it serves as a building block in medicinal chemistry for designing molecules with improved pharmacokinetic properties.