1-Methyl-4-((2-(phenylthio)phenyl)methyl)piperazine (Z)-2-butenedioate (1:1) 1-Methyl-4-(2-(phenylthio)benzyl)piperazine maleate 37652-48-5 Piperazine, 1-methyl-4-((2-(phenylthio)phenyl)methyl)-, (Z)-2-butenedioate (1:1) VUFB-15377