Did you look in the Sigma catalog? There are a lot there.
p-nitroanilide derivatives are good.
rich
--
--- --- --- -- -- -- --- --- ---
Richard J. Dudley (rdudley+ at pitt.edu)
Research Specialist V
Dept. of Cell Biology and Physiology
University of Pittsburgh
http://www.cbp.pitt.edu
---> search BIONET archives at http://www.bio.net <---
