2-Propenoic acid, 3-(2-chlorophenyl)-, compd. with 1,4-piperazinediamine (2:1) 20150-06-5 CINNAMIC ACID, o-CHLORO-, Compd. with 1,4-DIAMINOPIPERAZINE (2:1) N,N'-Diaminopiperazine salt of o-chlorocinnamic acid o-Chlorocinnamoyldiaminopiperazine