Used primarily as a nitrogen-15 labeled fertilizer in agricultural research to study nitrogen uptake, metabolism, and efficiency in plants. It helps in tracing nitrogen pathways in soil-plant systems, aiding in the development of optimized fertilization strategies. Also employed in environmental studies to monitor nitrogen pollution and its impact on ecosystems. In biochemistry, it serves as a stable isotope tracer for investigating nitrogen-containing compounds and metabolic processes in organisms. Additionally, it finds application in nuclear magnetic resonance (NMR) spectroscopy for labeling and analyzing nitrogen-containing molecules.