Ldn1931891062368-24-4100 % similar Dorsomorphin866405-64-339 % similar Phenylpiperazine92-54-635 % similar 1-Phenylpiperazine hydrochloride2210-93-733 % similar Quipazine4774-24-732 % similar Pyridinylpiperazine34803-66-232 % similar 3-(1-Piperazinyl)-1,2-benzisothiazole87691-87-031 % similar 4-(1-Piperazinyl)benzonitrile68104-63-231 % similar 1-(4-Chlorophenyl)piperazine38212-33-831 % similar 1-(4-Fluorophenyl)piperazine2252-63-330 % similar 1-(4-Methylphenyl)piperazine39593-08-330 % similar 1-(4-Hydroxyphenyl)piperazine56621-48-830 % similar 1-(2-Pyridyl)piperazine monohydrochloride129394-11-230 % similar