title: Preparation of 2,4-dinitrophenyl derivatives of amino acids in dipolar aprotic solvents.
mesh_terms: D000596:Amino Acids / Q000138:chemical synthesis*; D004140:Dinitrophenols / Q000138:chemical synthesis*; D008722:Methods; D012997:Solvents
chemical_list: D000596:Amino Acids; D004140:Dinitrophenols; D012997:Solvents