title: Fast atom bombardment (FAB) mass spectrometry: a mass spectral investigation of some of the insulins.
abstract: Mass measurements of the protonated molecules [M + H]+ of four insulins are presented. In addition, structurally significant fragment ions are observed in the mass spectrum and metastable scanning has been used to link these ions to the protonated molecule.
mesh_terms: D000818:Animals; D002417:Cattle; D006736:Horses; D007328:Insulin / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods*; D012756:Sheep; D013552:Swine
chemical_list: D007328:Insulin