76626-36-3 H-D-Val-phe-lys-p-nitroanilide H-D-Valyl-L-phenylalanyl-L-lysine-p-nitroanilide dihydrochloride L-Lysinamide, D-valyl-L-phenylalanyl-N-(4-nitrophenyl)- S 2390 S-2390 Val-phe-lys-pna Valyl-phenylalanyl-lysine-4-nitroanilide