The inhibition of trypsin, plasmin, and thrombin by benzyl 4-guanidinobenzoate and 4'-nitrobenzyl 4-guanidinobenzoate.

The inhibition of the enzymes trypsin, plasmin, and thrombin by benzyl 4-guanidinobenzoate and 4'-nitrobenzyl 4-guanidinobenzoate is caused by acylation of the active site. Second order rate constants were determined.