(2S)-2-(Fmoc-amino)dodecanoic acid is primarily used in peptide synthesis as a building block. The Fmoc (fluorenylmethyloxycarbonyl) group serves as a protective group for the amino functionality, allowing selective deprotection during the synthesis process. This compound is particularly useful in solid-phase peptide synthesis (SPPS), where it helps in the stepwise assembly of peptides. Its long alkyl chain (dodecanoic acid) can also contribute to the lipophilicity of the synthesized peptides, which may be beneficial in designing peptides with specific membrane interactions or improved stability. Additionally, it finds applications in the development of peptide-based drugs, biomaterials, and research tools where controlled peptide assembly is required.