137233-78-4 L-Lysine, N6-(N-(bromoacetyl)-beta-alanyl)-N2-((1,1-dimethylethoxy)carbonyl)- N-Bbal N-alpha-(tert-Butoxycarbonyl)-N-epsilon-(N-(bromoacetyl)-beta-alanyl)-L-lysine Nalpha-(tert-butoxycarbonyl)-nepsilon-(N-(bromoacetyl)alanyl)lysine