| 2-(4-methyl-1-piperazinyl)-n-(4-nitrophenyl)-n-phenyl-acetamid (z)-2-butene |
| 4-methyl-n-(4-nitrophenyl)-n-phenyl-1-piperazineacetamid (z)-2-butenedioa |
| n-(4-nitrophenyl)-n-phenyl-2-(4-methyl-1-piperazinyl)acetamide dimaleate |
| 2-(4-methyl-1-piperazinyl)-n-(4-nitrophenyl)-n-phenyl-acetamid(z)-2-butenedioate (1:2) |
