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(2R)-2-(thiophen-2-yl)piperazine
(2S)-2-(thiophen-2-yl)piperazine
(2S)-2-benzylpiperazine
(2R)-2-benzylpiperazine
2-[(2-methylphenyl)methyl]piperazine
(2S)-2-[(2-methylphenyl)methyl]piperazine
(2R)-2-[(2-methylphenyl)methyl]piperazine
2-[(3-methylphenyl)methyl]piperazine
(2S)-2-[(3-methylphenyl)methyl]piperazine
(2R)-2-[(3-methylphenyl)methyl]piperazine
2-[(4-methylphenyl)methyl]piperazine
(2S)-2-[(4-methylphenyl)methyl]piperazine
(2R)-2-[(4-methylphenyl)methyl]piperazine
2-[(2-fluorophenyl)methyl]piperazine
(2S)-2-[(2-fluorophenyl)methyl]piperazine
(2R)-2-[(2-fluorophenyl)methyl]piperazine
2-[(3-fluorophenyl)methyl]piperazine
(2S)-2-[(3-fluorophenyl)methyl]piperazine
(2R)-2-[(3-fluorophenyl)methyl]piperazine
2-[(4-fluorophenyl)methyl]piperazine
(2S)-2-[(4-fluorophenyl)methyl]piperazine
(2R)-2-[(4-fluorophenyl)methyl]piperazine
2-[(2-chlorophenyl)methyl]piperazine
(2S)-2-[(2-chlorophenyl)methyl]piperazine
(2R)-2-[(2-chlorophenyl)methyl]piperazine
2-[(3-chlorophenyl)methyl]piperazine
(2S)-2-[(3-chlorophenyl)methyl]piperazine
(2R)-2-[(3-chlorophenyl)methyl]piperazine
2-[(4-chlorophenyl)methyl]piperazine
(2S)-2-[(4-chlorophenyl)methyl]piperazine
(2R)-2-[(4-chlorophenyl)methyl]piperazine
2-[(2-bromophenyl)methyl]piperazine
(2S)-2-[(2-bromophenyl)methyl]piperazine
(2R)-2-[(2-bromophenyl)methyl]piperazine
2-[(3-bromophenyl)methyl]piperazine
(2S)-2-[(3-bromophenyl)methyl]piperazine
(2R)-2-[(3-bromophenyl)methyl]piperazine
2-[(4-bromophenyl)methyl]piperazine
(2S)-2-[(4-bromophenyl)methyl]piperazine
(2R)-2-[(4-bromophenyl)methyl]piperazine
2-{[2-(trifluoromethyl)phenyl]methyl}piperazine
(2S)-2-{[2-(trifluoromethyl)phenyl]methyl}piperazine
(2R)-2-{[2-(trifluoromethyl)phenyl]methyl}piperazine
2-{[3-(trifluoromethyl)phenyl]methyl}piperazine
(2S)-2-{[3-(trifluoromethyl)phenyl]methyl}piperazine
(2R)-2-{[3-(trifluoromethyl)phenyl]methyl}piperazine
2-{[4-(trifluoromethyl)phenyl]methyl}piperazine
(2S)-2-{[4-(trifluoromethyl)phenyl]methyl}piperazine
(2R)-2-{[4-(trifluoromethyl)phenyl]methyl}piperazine
2-[(2-methoxyphenyl)methyl]piperazine