Z-Abu-OH is widely used in peptide synthesis as a building block for creating specific peptide sequences. It serves as a protected form of aminobutyric acid, ensuring the amino group remains intact during complex reactions. This compound is particularly valuable in solid-phase peptide synthesis (SPPS), where it helps in constructing peptides with high precision and purity. Additionally, it finds applications in medicinal chemistry for developing peptide-based drugs and bioactive molecules. Its role in research extends to studying protein interactions and designing enzyme inhibitors, making it a crucial tool in biochemistry and pharmaceutical development.