H-D-Val-Leu-Arg-pNA

Val-Leu-Arg-p-nitroanilide

H-D-Val-Leu-Arg-pNA . 2 AcOH

D-Valyl-leucyl-arginine-p-nitroanilide

L-Argininamide, D-valyl-L-leucyl-N-(4-nitrophenyl)-