title: The reaction of 3-diazonium-1,2,4-triazole with tryptophan at acid pH: a scintillation method for tryptophan determination in proteins.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002417:Cattle; D003979:Diazonium Compounds; D007202:Indicators and Reagents; D011506:Proteins; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D014230:Triazoles; D014357:Trypsin; D014364:Tryptophan / Q000032:analysis*
chemical_list: D000596:Amino Acids; D003979:Diazonium Compounds; D007202:Indicators and Reagents; D011506:Proteins; D014230:Triazoles; C007310:diazonium-1,2,4-triazole; D014364:Tryptophan; D014357:Trypsin