| 1-butyl-4-((2-(phenylmethyl)phenyl)methyl)-piperazin (z)-2-butenedioate (1: |
| 1-(2-benzylbenzyl)-4-(n-butyl)piperazine di(hydrogen maleate) |
| 1-butyl-4-((2-(phenylmethyl)phenyl)methyl)piperazine dimaleate |
| 1-butyl-4-((2-(phenylmethyl)phenyl)methyl)-piperazin (z)-2-butenedioate (1:2) |
