Used in the synthesis of biologically active compounds and peptide mimics, 2-Aminononanoic acid serves as a non-proteinogenic amino acid building block in medicinal chemistry. Its long aliphatic side chain enables incorporation into peptidomimetic structures to modulate stability, lipophilicity, and receptor binding properties. It is also employed in the development of antimicrobial agents and enzyme inhibitors, where side chain length and hydrophobicity play key roles in activity. Additionally, it finds use in research related to metabolic pathways and amino acid transport systems.