42575-83-7 DL-Leucine, N-(N-((4-(bis(2-chloroethyl)amino)phenyl)acetyl)-L-histidyl)-, methyl ester, monohydrochloride N-(N-((4-(Bis(2-chloroethyl)amino)phenyl)acetyl)-L-histidyl)-DL-leucine methyl ester, monohydrochloride