Aspartylglycine is a dipeptide composed of aspartic acid and glycine. It is a naturally occurring compound found in the human body and is a metabolite of aspartame. The compound is of interest in biochemical and medical research. In biological systems, aspartylglycine is primarily known as a metabolite. It has been studied in the context of metabolic disorders, particularly in relation to inborn errors of metabolism such as Canavan disease, where it can be found at elevated levels in urine. This makes it a potential biomarker for certain neurological conditions. Additionally, as a dipeptide, it serves as a basic building block in peptide chemistry research and can be used in the synthesis of more complex peptides. The compound is also relevant in food science as a hydrolysis product of the artificial sweetener aspartame. Its presence and stability are factors considered in the metabolism and safety assessment of aspartame-containing products.