1-Cinnamyl-4-propionylpiperazine hydrochloride 1-Phenylallyl-4-propionylpiperazine hydrochloride 17730-81-3 Piperazine, 1-cinnamyl-4-propionyl-, monohydrochloride Piperazine, 1-phenylallyl-4-propionyl-, hydrochloride