title: The investigation of radiopharmaceutical components by fast atom bombardment mass spectrometry: the identification of Tc-HIDA and the epimers of Tc-CO2DADS.
abstract: The nature of two technetium-labeled radiopharmaceutical components has been established by means of fast-atom-bombardment mass spectrometry (FABMS) in combination with carrier-added (CA) and no-carrier-added (NCA) reversed-phase high-pressure liquid chromatography (HPLC). Negative-ion FABMS was used to determine that the epimers of Tc-CO2DADS are the oxo[N,N'-(1-carboxyethylene)-bis-(2-mercaptoacetimido)]technetate(V) ions; positive-ion FABMS showed that Tc-HIDA is bis[N-(2,6-dimethylphenyl-carbamoylmethyliminodiaceto]technetate(III).
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005029:Ethylenediamines / Q000032:analysis* / Q000138:chemical synthesis; D007098:Imino Acids / Q000032:analysis* / Q000138:chemical synthesis; D013058:Mass Spectrometry / Q000379:methods; D015609:Organotechnetium Compounds; D013237:Stereoisomerism; D013667:Technetium / Q000032:analysis* / Q000138:chemical synthesis; D019780:Technetium Tc 99m Lidofenin
chemical_list: D005029:Ethylenediamines; D007098:Imino Acids; D015609:Organotechnetium Compounds; D019780:Technetium Tc 99m Lidofenin; D013667:Technetium; C028923:technetium Tc 99m N,N'-bis(mercaptoacetamido)ethylenediamine