1-Piperazinepropanoic acid, 4-(2-((4-methylphenyl)phenylmethoxy)ethyl)-, (Z)-2-butenedioate 1-Piperazinepropionic acid, 4-(2-(phenyl-p-tolylmethoxy)ethyl)-, dimaleate 4-(2-(Phenyl-p-tolylmethoxy)ethyl)-1-piperazinepropionic acid dimaleate 61897-13-0