threo-Ifenprodil hemitartrate 

threo Ifenprodil hemitartrate is a σ receptor agonist, with K_is of 59.1 and 2 nM for σ1 and σ2 receptors, respectively. threo Ifenprodil hemitartrate is also a NR2B subunit-selective NMDA receptor antagonist (IC₅₀=0.22 μM). threo Ifenprodil hemitartrate is a hERG potassium channel inhibitor, with an IC ₅₀ of 88 nM, showing antiarrhythmic activity^[1][2][3].

IC50: 0.22 μM (NMDA)^[1].

400.50

C₂₁H₂₇NO₂.1/2C₄H₆O₆

1312991-83-5

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Hashimoto K, et al. Interactions of erythro-ifenprodil, threo-ifenprodil, erythro-iodoifenprodil, and eliprodil with subtypes of sigma receptors. Eur J Pharmacol. 1995 Feb 6;273(3):307-10.  [Content Brief]

  [2]. Avenet P, et al. Antagonist properties of the stereoisomers of ifenprodil at NR1A/NR2A and NR1A/NR2B subtypes of the NMDA receptor expressed in Xenopus oocytes. Eur J Pharmacol. 1996 Jan 25;296(2):209-13.  [Content Brief]

  [3]. Monassier L, et al. sigma(2)-receptor ligand-mediated inhibition of inwardly rectifying K(+) channels in the heart. J Pharmacol Exp Ther. 2007 Jul;322(1):341-50.  [Content Brief]