title: A ninhydrin-orthophthalaldehyde reagent for the determination of Ntau-methylhistidine.
mesh_terms: D006639:Histidine / Q000031:analogs & derivatives*; D006801:Humans; D007202:Indicators and Reagents; D008722:Methods; D008762:Methylhistidines / Q000032:analysis* / Q000652:urine; D009555:Ninhydrin; D009764:o-Phthalaldehyde
chemical_list: D007202:Indicators and Reagents; D008762:Methylhistidines; D006639:Histidine; D009764:o-Phthalaldehyde; D009555:Ninhydrin