Five chromogenic substrates for chymotrypsin, P3-P2-Pl-p-NA (P1 ,P2,P3 = Phe, Leu, Ala, Pro, Asn) have been synthesized.

• 胰凝乳蛋白酶是一类重要的蛋白水解酶,在其纯化及应用时常常需要进行酶活性的测定;