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3-Benzyl-3,9-diaza-spiro[5.5]undecane189333-49-130 % similar 1-((4-Methoxyphenyl)methyl)piperazine21867-69-630 % similar 1-(2-Methoxyphenyl)piperazine35386-24-430 % similar N-(2-Chlorophenyl)piperazine monohydrochloride41202-32-830 % similar 1-[2-(Trifluoromethyl)phenyl]piperazine63854-31-930 % similar N-(2-Methylphenyl)piperazine hydrochloride70849-60-430 % similar 2-Piperazin-1-yl-benzaldehyde736991-52-930 % similar 1-(4-tert-Butylbenzyl)piperazine956-61-630 % similar 1-(2,6-Dimethylphenyl)piperazine1012-91-530 % similar 2-(Benzylamino)pyridine6935-27-930 % similar