Used in the synthesis of isotopically labeled compounds for research and analytical purposes. It is particularly valuable in nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry, where the carbon-13 labeling provides a non-radioactive tracer to study chemical structures and reaction mechanisms. In pharmaceutical development, it aids in the creation of labeled drug molecules to track their metabolism and distribution in biological systems. Additionally, it is employed in the production of labeled acetic acid derivatives, which are essential in various biochemical and environmental studies.