| 摘要 |
<p>A phenylalanylarginine derivative represented by the formula, <IMAGE> (I) wherein R1 represents hydrogen or an amino-protecting group; R2 and R3 represent hydrogen or guanidino-protecting groups; R4 represents naphthyl. The above compound is useful as an excellent substrate for various enzymes, such as trypsin, plasmin, kallikrein, urokinase, Cl-esterase and the like. Accordingly, the activity of enzymes can be measured by use of said compound as a substrate.</p> |
