1,3-Propanediamine, N,N'-bis(3-phenyl-2-propenylidene)- 25351-57-9 EINECS 246-880-1 N,N'-Bis(3-phenylallylidene)propane-1,3-diamine N1,N3-Bis(3-phenyl-2-propenylidene)-1,3-propanediamine