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Art. -Nr.: HY-182459

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Org 34167 (freebase)

Org 34167 freebase is a blood-brain barrier permeable HCN channel modulator. Org 34167 freebase possesses high Caco-2 cell permeability. Org 34167 freebase modulates HCN channel function to alter activation properties and suppress neuronal hyperexcitability. Org 34167 freebase induces tremors in mice at specific doses. Org 34167 freebase acts as a research tool for studies on developmental and epileptic encephalopathies as well as depression.

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CAS. Nr.: 198968-25-1
Formel: C₁₇H₁₆N₂O
Molecular Weight:264.32

Speicherung:

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

Org 34167 (freebase) Chemical Structure

CAS. Nr.: 198968-25-1

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Use of MCE Products

Fluorescent Dye

Strong Fluorescence Signal / Multi-Disciplinary Applications / High Fluorescence Specificity

Biologische Aktivität
- Beschreibung
- In Vitro
- In Vivo
Chemical Information
Reinheit & Dokumentation
Verweise
Calculators
Help & FAQs
Classifications
Bioz

Biologische Aktivität

Beschreibung

In Vitro

Org 34167 freebase restores voltage dependence and reduces cation leak in homomeric HCN1^M305L channels, heterozygous HCN1^WT+M305L channels, and heterozygous channels expressing five additional HCN1 DEE variants in Xenopus laevis oocytes^[1].
Org 34167 freebase inhibits wild‑type human HCN1 channels expressed in Xenopus laevis oocytes via multiple mechanisms, including a dose‑dependent hyperpolarizing shift in the mid‑point voltage of activation (V_0.5, IC₅₀ = 331 μM), and a dose‑dependent change in effective valence (z, IC₅₀ = 219 μM)^[2].
Org 34167 freebase inhibits truncated human HCN1^WT-Δ channels expressed in Xenopus laevis oocytes via mechanisms independent of the CNBD^[2].
Org 34167 freebase modulates human HCN1 channel gating by altering the PD open-closed equilibrium (IC₅₀ = 7.9 μM), weakening VSD-PD coupling (IC₅₀ = 63 μM), and favoring inactive VSD states (IC₅₀ = 316 μM)^[2].
Org 34167 (compound 33) (0.1-1 mM; 4 h) freebase shows high permeability across Caco-2 cell monolayers with P_app,ab values of 1.42×10^-5 cm/s at 1 mM and 1.25×10^-5 cm/s at 0.1 mM, and permeability ratios < 2, indicating it is not a Pgp substrate in this system^[3].

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

In Vivo

Org 34167 freebase (1-2 mg/kg; i.p.; single dose; 30 μM; bath application) significantly reduces epileptiform ECoG spiking frequency in Hcn1^M294L mice, normalizes select behavioral deficits, and rectifies biophysical and cellular hyperexcitability phenotypes in Hcn1^M294L neurons, while inducing tremors at therapeutic doses^[1].
Org 34167 freebase achieves good brain penetration in male Wistar rats, with a C_brain/C_blood ratio of 1.00^[3].

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

Animal Model:

Hcn1M294L knock-in (heterozygous, male/female, postnatal day 60-99 for behavioral experiments; postnatal day 20-30 for ex vivo slice electrophysiology); wild-type littermates (male/female, postnatal day 60-99 for behavioral experiments; postnatal day 20-30 for ex vivo slice electrophysiology)^[1]
Dosage:

1 mg/kg (ECoG); 2 mg/kg (ECoG, behavioral); 30 μM (ex vivo electrophysiology)
Administration:

i.p.; single dose (ECoG, behavioral); bath application (ex vivo electrophysiology)
Result:

Restored altered voltage dependence, reduced cation leak, and suppressed hyperexcitability in mutant HCN1 channels.
Normalized electrophysiological deficits and decreased epileptiform activity in Hcn1M294L mice.
Induced tremors at therapeutic doses while partially normalizing anxiety-related behaviors.
Differentially modulated wild-type and mutant HCN1-mediated neuronal excitability.

Chemical Information

CAS. Nr. 198968-25-1
Molecular Weight 264.32
Formel C₁₇H₁₆N₂O
SMILES

N[C@H](C1=C(C=CC=C1)C2=NOC3=CC=CC=C23)CC=C
Versand

Room temperature in continental US; may vary elsewhere.
Speicherung

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

Reinheit & Dokumentation

Handling Instructions (2659 KB)

Verweise

[1]. Bleakley LE, et al. Org 34167 rescues voltage dependence of mutant channels and normalizes hyperexcitability in HCN1 epilepsy. Epilepsia. 2025;66(12):5082-5095. [Content Brief]

[2]. McKenzie CE, et al. The Potential Antidepressant Compound Org 34167 Modulates HCN Channels Via a Novel Mode of Action. Mol Pharmacol. 2023;104(2):62-72. [Content Brief]

[3]. Faassen F, et al. Caco-2 permeability, P-glycoprotein transport ratios and brain penetration of heterocyclic drugs. Int J Pharm. 2003;263(1-2):113-122. [Content Brief]

Calculators

Molaritätsrechner

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass Mass

Konzentration Konzentration

Volumen Volumen

Molecular Weight Molecular Weight

Verdünnungsrechner

Konzentration _{(Stammlösung)} × Volumen _{(Stammlösung)} = Konzentration _{(Ziellösung)} × Volumen _{(Ziellösung)}

Konzentration _{(Stammlösung)} Konzentration _{(Stammlösung)}

Volumen _{(Stammlösung)} Volumen _{(Stammlösung)}

Konzentration _{(Ziellösung)} Konzentration _{(Ziellösung)}

Volumen _{(Ziellösung)} Volumen _{(Ziellösung)}

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How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

Keywords

100 mg

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