title: 13C-n.m.r. as a convenient aid to the differentiation of triethylenetetramine (TETA) dihydrochloride from related impurities.
mesh_terms: D002250:Carbon Radioisotopes; D004340:Drug Contamination; D005029:Ethylenediamines / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D014266:Trientine / Q000032:analysis* / Q000592:standards
chemical_list: D002250:Carbon Radioisotopes; D005029:Ethylenediamines; D014266:Trientine