Fmoc-β-(2-pyridyl)-D-Ala-OH is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a protected amino acid derivative, where the Fmoc (fluorenylmethyloxycarbonyl) group acts as a temporary protecting group for the amino functionality during the synthesis process. The presence of the 2-pyridyl side chain in this compound allows for the introduction of unique structural and functional properties into the peptide sequence, which can be beneficial in designing peptides with specific binding or catalytic activities. This chemical is often employed in the development of peptide-based drugs, bioactive peptides, and research tools for studying protein interactions and functions. Its application is crucial in creating peptides with tailored properties for pharmaceutical and biochemical research.