Fmoc-Gly-DL-Phe is a protected dipeptide derivative. It consists of glycine (Gly) and racemic phenylalanine (DL-Phe) linked by a peptide bond, with the N-terminus protected by a 9-fluorenylmethoxycarbonyl (Fmoc) group. This compound is a solid at room temperature. This molecule is a fundamental building block in solid-phase peptide synthesis (SPPS), particularly using the Fmoc strategy. The Fmoc group serves as an orthogonal protecting group for the amino terminus, which can be removed under mild basic conditions (e.g., piperidine) without affecting the peptide backbone. The racemic nature of the phenylalanine residue (DL-Phe) makes it useful for specific research applications, such as studying the effects of chirality on peptide structure and biological activity, or for synthesizing non-natural peptide analogs. As a key reagent in peptide chemistry, it is widely used in academic and industrial research for the synthesis of peptides, peptidomimetics, and bioactive compounds. Its primary value lies in its role as a standardized, high-purity synthetic unit for constructing more complex peptide sequences.