1-(6-Tetralyl)-4-methylpiperazine maleate 1-Methyl-4-(5,6,7,8-tetrahydro-2-naphthalenyl)piperazine maleate 57537-14-1 Piperazine, 1-methyl-4-(5,6,7,8-tetrahydro-2-naphthalenyl)-, (Z)-2-butenedioate (1:1)