title: New internal standards for basic amino acid analyses.
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D001593:Benzyl Compounds / Q000138:chemical synthesis; D055598:Chemical Phenomena; D002621:Chemistry; D002852:Chromatography, Ion Exchange; D003545:Cysteine / Q000138:chemical synthesis; D006863:Hydrogen-Ion Concentration; D008722:Methods; D009574:Nitro Compounds / Q000138:chemical synthesis; D010396:Penicillamine / Q000138:chemical synthesis; D011725:Pyridines; D013343:Styrenes; D013997:Time Factors; D014753:Vinyl Compounds
chemical_list: D000596:Amino Acids; D001593:Benzyl Compounds; D009574:Nitro Compounds; D011725:Pyridines; D013343:Styrenes; D014753:Vinyl Compounds; D010396:Penicillamine; D003545:Cysteine