Benzoic-13C Acid is widely used as a labeled compound in various scientific research applications. Its primary use is in isotopic labeling studies, where it serves as a tracer to investigate metabolic pathways and chemical reactions. In pharmaceutical research, it is employed to study drug metabolism and pharmacokinetics, providing insights into how drugs are processed in the body. Additionally, it is utilized in environmental science to track the degradation of organic compounds and understand their behavior in ecosystems. Its stable carbon-13 isotope makes it a valuable tool in nuclear magnetic resonance (NMR) spectroscopy for structural analysis and molecular dynamics studies. In food science, it helps in tracing the pathways of preservatives and additives to ensure safety and compliance with regulations.