2-Propenoic acid, 3-(4-chlorophenyl)-, compd. with 1,4-piperazinediamine (2:1) (9CI) 20150-07-6 CINNAMIC ACID, p-CHLORO-, Compd. with 1,4-DIAMINOPIPERAZINE (2:1) N,N'-Diaminopiperazine salt of p-chlorocinnamic acid Piperazine, (p-chlorodiamino cinnamoyl)- p-Chlorocinnamoyldiaminopiperazine