Fmoc-Ala-OH is widely used in peptide synthesis as a protecting group for the amino acid alanine. It plays a crucial role in solid-phase peptide synthesis (SPPS), where the Fmoc group protects the amino group during the assembly of the peptide chain. This allows for selective deprotection and coupling of amino acids, ensuring the correct sequence is formed. Additionally, it is valued for its stability under basic conditions and ease of removal using piperidine, making it a preferred choice in biochemistry and pharmaceutical research for producing peptides with high purity and precision.