139914-00-4 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-(((((4-(bis(2-chloroethyl)amino)phenyl)amino)carbonyl)oxy)methyl)-8-oxo-7-((phenylacetyl)amino)-, (6R-trans)- 7-(Phenylacetamido)cephalosporin mustard Cephalosporin mustard