, Volume 27, Issue 1, pp 20–22 | Cite as

Kinetik der Reaktion von Imidazol-SH-Verbindungen mit Ellman Reagenz [5,5′-Dithio-bis-(-2-nitrobenzoesäure)]

  • H. Wenck
  • Fr. Schneider
Specialia Mineralogica, Geophysica, Oceanographica


The rate of reaction of some derivatives and peptides of cysteine and a number of imidazole-SH-compounds with 5,5′-Dithio-bis-(2-nitrobenzoic acid) (DTNB) as well as the dependence of the reaction rate upon pH were investigated; for several compounds an equation is given, by which the rate constants and half reaction times can be estimated for various pH values. For some of the imidazole-SH-compounds studied thepK of the SH-group is no criterion of their reactivity with DTNB.


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Copyright information

© Birkhäuser Verlag 1971

Authors and Affiliations

  • H. Wenck
    • 1
  • Fr. Schneider
    • 1
  1. 1.Physiologisch-chemisches Institut der UniversitätTübingenDeutschland

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