1. Membrane Transporter/Ion Channel
  2. Potassium Channel
  3. AP14145 hydrochloride

AP14145 hydrochloride is a potent KCa2 (SK) channel negative allosteric modulator with an IC50 of 1.1 μM for KCa2.2 (SK2) and KCa2.3 (SK3) channels. AP14145 hydrochloride inhibition strongly depends on two amino acids, S508 and A533 in the channel. AP14145 hydrochloride prolonged atrial effective refractory period (AERP) in rats and demonstrates antiarrhythmic effects in a Vernakalant-resistant porcine model of atrial fibrillation (AF).

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AP14145 hydrochloride Chemical Structure

AP14145 hydrochloride Chemical Structure

CAS No. : 2387505-59-9

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Description

AP14145 hydrochloride is a potent KCa2 (SK) channel negative allosteric modulator with an IC50 of 1.1 μM for KCa2.2 (SK2) and KCa2.3 (SK3) channels. AP14145 hydrochloride inhibition strongly depends on two amino acids, S508 and A533 in the channel. AP14145 hydrochloride prolonged atrial effective refractory period (AERP) in rats and demonstrates antiarrhythmic effects in a Vernakalant-resistant porcine model of atrial fibrillation (AF)[1][2].

IC50 & Target

IC50: 1.1 μM (KCa2.2) and 1.1 μM (KCa2.3)[1]

In Vitro

AP14145 (10 nM-30 μM) inhibits both hKCa2.2 and hKCa2.3 channel currents in a concentration‐dependent fashion. AP14145 (10 μM) inhibits 50% of the hKCa1.1 current, 90% of the hKCa2.1 current and has no effect on hKCa3.1 channel. AP14145 (10 μM) increases the EC50 of Ca2+ on KCa2.3 channels from 0.36 to 1.2 μM[1].
AP14145 hydrochloride demonstrates an IC50 in whole-cell patch clamp on the human SK3 channel of 1.3 µM. AP14145 inhibits hERG (KV11.1) with an IC50 of 71.8 µM and Kir3.1/Kir3.4 (IKACh) with an IC50 of 9.3 µM and does not produce any significant effects on KV1.5 (IKur), KV7.1/KCNE1 (IKs), KV4.3/KChiP2 (Ito), and Kir2.1 (IK1) in 30 µM or on NaV1.5 (15 µM; INa) on a panel of cardiac ion channels. AP14145 (1-10 µM) produces no significant block of CaV1.2[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

AP14145 (10 μM) increases the duration of the atrial effective refractory period (AERP) in isolated perfused rat hearts[1].
AP14145 (2.5 and 5 mg/kg; bolus injections (iv)) increases the duration of the atrial effective refractory period in male sprague-dawley rats (250-350 g, 1-3 months old)[1].
AP14145 (5 mg/kg; bolus injections) has a Cmax of 8355 nmol/L, a t½ of 24.3 minutes in landrace pigs (12-13 weeks old, 30-35 kg gilts)[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight

398.81

Formula

C18H18ClF3N4O

CAS No.
SMILES

CC(NC1=C2C(N=C(N[C@@H](C3=CC=CC(C(F)(F)F)=C3)C)N2)=CC=C1)=O.[H]Cl

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Room temperature in continental US; may vary elsewhere.

Storage

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

Purity & Documentation
References
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AP14145 hydrochloride Related Classifications

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AP14145 hydrochloride
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HY-120355A
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