Glutaric Anhydride-1,5-13C2 is a stable isotope-labeled derivative of glutaric anhydride, where the 1st and 5th carbon positions are enriched with 13C. This compound is primarily utilized as a tracer in metabolic studies, NMR spectroscopy, and mass spectrometry applications due to its isotopic purity and well-defined labeling pattern. Its high chemical stability and compatibility with organic synthesis make it suitable for investigating biochemical pathways, particularly in carboxylic acid metabolism. The 13C labeling allows for precise tracking and quantification in complex biological systems, enhancing research accuracy. The product is supplied with documented isotopic enrichment, ensuring reliability for analytical and synthetic purposes.