38232-20-1 L-Norvaline, N-(3-(bis(2-chloroethyl)amino)-N-L-prolyl-L-phenylalanyl)- MF 13 MF-13 MF13 Cpd Pro-3-bca-phe-nva ethyl ester Prolyl-m-(bis(chloroethyl)amino)phenylalanyl-norvaline ethyle ester hydrochloride