1,4-Bis(1-methyl-3-phenylpropyl)piperazine dihydrobromide 101975-99-9 F 211 Piperazine, 1,4-bis(1-methyl-3-phenylpropyl)-, dihydrobromide Piperazine, 1,4-bis(1-phenyl-2-butyl)-, dihydrobromide