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  • Ralph R. von Kaufmann, Birgit Spengler, Frank Lützenkirchen
  • Chemistry, Medicine
  • Rapid communications in mass spectrometry : RCM
  • 1993 (First Published: 1 October 1993)
  • In matrix-assisted laser desorption ionization (MALDI) a large fraction of analyte ions undergo post-source decay (PSD) during flight in the field-free drift path. By means of a modified two-stageContinue Reading
  • Ralph R. von Kaufmann, Perrine Chaurand, Dieter Kirsch, Birgit Spengler
  • Chemistry, Medicine
  • Rapid communications in mass spectrometry : RCM
  • 1996 (First Published: 31 July 1996)
  • By the incorporation of delayed extraction (DE) into matrix-assisted laser desorption/ionization time-of-flight mass spectrometry a dramatic improvement of performance with respect to sensitivity,Continue Reading
  • Jan Machold, Yu. N. Utkin, Dieter Kirsch, Ralph R. von Kaufmann, V Tsetlin, Ferdinand Hucho
  • Chemistry, Medicine
  • Proceedings of the National Academy of Sciences…
  • 1995 (First Published: 1 August 1995)
  • A photoactivatable derivative of neurotoxin II from Naja naja oxiana containing a 125I-labeled p-azidosalicylamidoethyl-1,3'-dithiopropyl label at Lys-25 forms a photo-induced cross-link with theContinue Reading