2-(2-Acetamido-4-methylvaleramido)-N-(1-formyl-4-guanidinobutyl)-4-methylvaleramide 24365-47-7 24365-55-7 34015-60-6 Acetyl-L-leucyl-L-leucylargininal L-Leucinamide, N-acetyl-L-leucyl-N-(4-((aminoiminomethyl)amino)-1-formylbutyl)- Leupeptin Leupeptin Ac-LL N-Acetyl-L-leucyl-L-leucyl-L-argininal NK-381 Valeramide, 2-(2-acetamido-4-methylvaleramido)-N-(1-formyl-4-guanidinobutyl)-4-methyl-