This compound is an Fmoc-protected (R)-(piperidin-2-yl)acetic acid widely used as a building block in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). The fluorenylmethoxycarbonyl (Fmoc) group protects the piperidine nitrogen, ensuring selective protection of the amine during the synthesis process and preventing unwanted reactions. Its application allows for the stepwise construction of peptides with high precision. After incorporation, the Fmoc group can be easily removed under mild basic conditions, making it a versatile tool in the production of complex peptides and proteins for pharmaceutical and biochemical research.