Use of Sm(III)-{1,2-propanediamine-N,N,N′,N′-tetra(α, α-dideuterioacetate)} complex for NMR determination of absolute configuration of each α-amino acid in peptide hydrolysate mixtures

¹H NMR analyses of individual α-amino acids in their mixture were simultaneously conducted in the presence of Sm-(pdta-d₈) in water: high regularity, promising for direct simultaneous determination of absolute configurations of each α-amino acids in peptide hydrolysate mixtures, was observed between absolute configuration and the induced shifts.