Used in metabolic research to trace pantothenic acid (vitamin B5) pathways in biological systems. The isotopic labeling (13C3,15N) allows for precise tracking in mass spectrometry and NMR studies. Commonly applied in studies of coenzyme A biosynthesis, fatty acid metabolism, and energy production pathways. The hemicalcium salt form improves stability and solubility for in vitro and in vivo experiments. Also utilized in stable isotope labeling in proteomics and metabolomics to quantify biochemical fluxes.