Glycine anhydride is primarily used in peptide synthesis as a building block for creating more complex peptide structures. It acts as a protective group for amino acids, preventing unwanted side reactions during the synthesis process. This compound is also utilized in the production of certain pharmaceuticals, where it serves as an intermediate in the synthesis of active pharmaceutical ingredients. Additionally, glycine anhydride finds applications in the development of biodegradable polymers, contributing to the creation of environmentally friendly materials. Its role in organic synthesis extends to the preparation of various heterocyclic compounds, which are important in the fields of medicinal chemistry and material science.