(/-)-2-Acetylaminobutanoic Acid-d3 is primarily used in research and development as a labeled compound in metabolic studies. Its deuterated form allows for precise tracking and analysis of biochemical pathways, particularly in the study of amino acid metabolism and protein synthesis. This compound is valuable in NMR spectroscopy and mass spectrometry, where it serves as an internal standard to enhance the accuracy of measurements. Additionally, it is utilized in pharmacokinetic studies to understand drug metabolism and distribution in the body. Its application extends to the development of diagnostic tools and therapeutic agents, aiding in the identification of metabolic disorders and the optimization of drug efficacy.