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. Author manuscript; available in PMC: 2017 Nov 13.
Published in final edited form as: Pharmacol Biochem Behav. 2016 Nov 13;150-151:198–206. doi: 10.1016/j.pbb.2016.11.003

Table 1.

Binding affinities of N-phenylpropyl-N´-substituted piperazines for σ1 and σ2 sigma receptors.

N’-Piperazine Substitution σ1 (nM) σ2 (nM) Citation
SA4503 3,4-dimethoxyphenethyl 4.63 (±0.21) 63.09 (±4.33) Lever et al., 2006
YZ-185 3-methoxyphenethyl 1.4 (±0.2) 10.2 (±0.5) Matsumoto et al., 2004
YZ-067 4-methoxyphenethyl 1.3 (±0.3) 28.6 (±1.9) Matsumoto et al., 2004
Nahas-3h 4-methoxybenzyl 0.76 (±0.07) 32.8 (±2.93) Nahas et al., 2008
Methamphetamine 2,160 (±0.25) 46,670
(±10.34)
Nguyen et al., 2005

Values represent mean (± S.E.M.) Ki values as reported by the citations in the table.