[D9]-(tert-butyl)acetic acid CAS Number

[D9]-(tert-butyl)acetic acid is a stable isotope-labeled derivative of tert-butylacetic acid, serving as an internal standard and tracer in biochemical, metabolic, and analytical research. Isotope labeling with deuterium alters physicochemical properties slightly while maintaining chemical structure, facilitating precise quantification via mass spectrometry without signal suppression artifacts. This derivative enables accurate profiling of organic acid metabolites and reaction kinetics in enzymatic and biochemical pathway studies. ^[1]

[1] Atzrodt J, et al. Angew Chem Int Ed Engl. 2007;46(41):7744-65.