70967-90-7 Aapv-NA L-Valinamide, N-(4-methoxy-1,4-dioxobutyl)-L-alanyl-L-alanyl-L-prolyl-N-(4-nitrophenyl)- Meo-suc-ala-ala-pro-val-NA N-(4-Methoxy-1,4-dioxobutyl)-L-alanyl-L-alanyl-L-prolyl-N-(4-nitrophenyl)-L-valinamide N-Methoxysuccinyl-alanyl-alanyl-prolyl-valine-4-nitroanilide N-Methoxysuccinyl-alanyl-alanyl-prolyl-valine-p-nitroanilide