Assay of the esterase activity of thrombin, plasmin and trypsin with a chromogenic substrate p-nitrobenzyl p-toluenesulfonyl-l-arginine.


p-Nitrobenzyl p-toluenesulfonyl-L-arginine has been synthesized. A number of trypsin-like enzymes can catalyze the hydrolysis of this ester leading to formation of p-nitrobenzyl alcohol. After separation from the ester and p-toluenesulfonylarginine by extraction into chloroform, the p-nitrobenzyl alcohol liberated can be measured spectrophotometrically at… (More)


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