Simultaneous identification and quantification of amino acids in biofluids by reactive 19 F-tags.

A robust method to identify and quantify amino acids close to physiological conditions by 1D ¹⁹ F NMR was established. Each ¹⁹ F-derivatized amino acid has its characteristic chemical-shift profile that is readily identified in the mixture of amino acids or in biofluids including fetal bovine serum and cell lysates. The method shows great potential in metabolomics and biochemical analysis.