title: Colorimetric determination of dinitrophenylamino acids with cyanide ion in dipolar aprotic solvents.
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D003124:Colorimetry / Q000379:methods; D003486:Cyanides; D004140:Dinitrophenols; D007202:Indicators and Reagents; D013053:Spectrophotometry / Q000379:methods
chemical_list: D000596:Amino Acids; D003486:Cyanides; D004140:Dinitrophenols; D007202:Indicators and Reagents