Cat. No.: HY-B1193

Terfenadine

(Synonyms: (±)-Terfenadine; MDL-991)

4 Cited Publications

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Based on 4 publication(s) in Google Scholar

Terfenadine ((±)-Terfenadine) is a potent open-channel blocker of hERG with an IC₅₀ of 204 nM. Terfenadine, an H1 histamine receptor antagonist, acts as a potent apoptosis inducer in melanoma cells through modulation of Ca²⁺ homeostasis. Terfenadine induces ROS-dependent apoptosis, simultaneously activates Caspase-4, -2, -9.

For research use only. We do not sell to patients.

Purity: 99.98%
CAS No.: 50679-08-8
Formula: C₃₂H₄₁NO₂
Molecular Weight:471.67

Storage:

Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year

Terfenadine Chemical Structure

CAS No.: 50679-08-8

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Biological Activity
- Description
- IC₅₀ & Target
- Cellular Effect
- In Vitro
- In Vivo
Chemical Information
Publications (4)
Solvent & Solubility
- In Vitro
- In Vivo
Purity & Documentation
References
Help & FAQs
Bioz

Biological Activity

Description

Terfenadine ((±)-Terfenadine) is a potent open-channel blocker of hERG with an IC₅₀ of 204 nM^[1]. Terfenadine, an H1 histamine receptor antagonist, acts as a potent apoptosis inducer in melanoma cells through modulation of Ca²⁺ homeostasis. Terfenadine induces ROS-dependent apoptosis, simultaneously activates Caspase-4, -2, -9^[2].

IC₅₀ & Target

H₁ Receptor

Caspase-4

Caspase-2

Caspase-9

All Histamine Receptor Isoforms :

All Caspase Isoforms :

Cellular Effect

Cell Line	Type	Value	Description	References
CHO	IC₅₀	56 nM Compound: Terfenadine	Inhibition of K+ channel activity in CHO cells expressing HERG Kv11.1 Inhibition of K+ channel activity in CHO cells expressing HERG Kv11.1	[PMID: 12729675]
CHO	IC₅₀	0.93 μM Compound: terfenadine	Inhibition of Cav1.2 current measured using QPatch automatic path clamp system in CHO cells expressing Cav1.2, beta-2 and alpha-2/delta-1 subunits Inhibition of Cav1.2 current measured using QPatch automatic path clamp system in CHO cells expressing Cav1.2, beta-2 and alpha-2/delta-1 subunits	[PMID: 23812503]
HEK293	IC₅₀	56 μM Compound: 41, Terfenadine	Inhibition of human ERG potassium channel in HEK293 cells by patch clamp assay Inhibition of human ERG potassium channel in HEK293 cells by patch clamp assay	[PMID: 16931010]
HEK293	IC₅₀	0.03 μM Compound: Terfenadine	Inhibition of human ERG S624A mutant expressed in HEK293 cells by whole cell patch clamp method Inhibition of human ERG S624A mutant expressed in HEK293 cells by whole cell patch clamp method	[PMID: 19260734]
HEK293	IC₅₀	0.03 μM Compound: Terfenadine	Inhibition of human ERG td[wt:F656A] mutant expressed in HEK293 cells by whole cell patch clamp method Inhibition of human ERG td[wt:F656A] mutant expressed in HEK293 cells by whole cell patch clamp method	[PMID: 19260734]
HEK293	IC₅₀	0.03 μM Compound: Terfenadine	Inhibition of human ERG td[wt:Y652A] mutant expressed in HEK293 cells by whole cell patch clamp method Inhibition of human ERG td[wt:Y652A] mutant expressed in HEK293 cells by whole cell patch clamp method	[PMID: 19260734]
HEK293	IC₅₀	0.03 μM Compound: Terfenadine	Inhibition of wild-type human ERG expressed in HEK293 cells by whole cell patch clamp method Inhibition of wild-type human ERG expressed in HEK293 cells by whole cell patch clamp method	[PMID: 19260734]
HEK293	IC₅₀	0.35 μM Compound: Terfenadine	Inhibition of human ERG Y652A mutant expressed in HEK293 cells by whole cell patch clamp method Inhibition of human ERG Y652A mutant expressed in HEK293 cells by whole cell patch clamp method	[PMID: 19260734]
HEK293	IC₅₀	0.96 μM Compound: Terfenadine	Inhibition of human ERG F656A mutant expressed in HEK293 cells by whole cell patch clamp method Inhibition of human ERG F656A mutant expressed in HEK293 cells by whole cell patch clamp method	[PMID: 19260734]
HEK293	IC₅₀	971 nM Compound: Terfenadine	Inhibition of sodium current measured using whole-cell patch clamp experiments in HEK-293 cells stably transfected with hNaV1.5 cDNA Inhibition of sodium current measured using whole-cell patch clamp experiments in HEK-293 cells stably transfected with hNaV1.5 cDNA	[PMID: 21300721]
HEK293	IC₅₀	0.056 μM Compound: figure 2, R2C1	Inhibition of human Erg expressed in HEK293 cells assessed as rubidium efflux after 4 hrs by atomic absorbance spectrometric analysis Inhibition of human Erg expressed in HEK293 cells assessed as rubidium efflux after 4 hrs by atomic absorbance spectrometric analysis	[PMID: 22542010]
HEK293	IC₅₀	1.32 μM Compound: Terfenadine	Inhibition of L-type calcium channel measured using 2-electrode voltage-clamp in human embryonic kidney cells heterologically expressing alpha-1C subunit Inhibition of L-type calcium channel measured using 2-electrode voltage-clamp in human embryonic kidney cells heterologically expressing alpha-1C subunit	[PMID: 22761000]
HEK293	IC₅₀	130 nM Compound: 1a, terfenadine	Displacement of [3H]astemizole from human ERG expressed in HEK293 cells by scintillation counting method Displacement of [3H]astemizole from human ERG expressed in HEK293 cells by scintillation counting method	[PMID: 25238555]
HEK293	IC₅₀	0.022 μM Compound: Terfenadine	Inhibition of human ERG expressed in HEK293 cells by patch clamp method Inhibition of human ERG expressed in HEK293 cells by patch clamp method	[PMID: 28481112]
HEK293	IC₅₀	0.086 μM Compound: Terfenadine	Inhibition of human ERG expressed in HEK293 cells at -80 mV holding potential by manual patch clamp assay Inhibition of human ERG expressed in HEK293 cells at -80 mV holding potential by manual patch clamp assay	[PMID: 30624934]
HEK293	IC₅₀	1.2 μM Compound: Terfenadine	Inhibition of human ERG expressed in HEK293 cells measured after 30 mins by FluxOR dye based FLIPR TETRA assay Inhibition of human ERG expressed in HEK293 cells measured after 30 mins by FluxOR dye based FLIPR TETRA assay	[PMID: 32392053]
L929	IC₅₀	312 nM Compound: rac-1	Inhibition of human ERG in L929 cells at 10 uM by whole cell patch-clamp assay Inhibition of human ERG in L929 cells at 10 uM by whole cell patch-clamp assay	[PMID: 19660947]
L929	IC₅₀	312 nM Compound: rac-1	Inhibition of human ERG in L929 cells by whole cell patch-clamp assay Inhibition of human ERG in L929 cells by whole cell patch-clamp assay	[PMID: 19660947]
LLC-PK1	IC₅₀	1.4 μM Compound: Terfenadine	Inhibition of P-glycoprotein, human L-MDR1 expressed in LLC-PK1 epithelial cells using calcein-AM polarisation assay Inhibition of P-glycoprotein, human L-MDR1 expressed in LLC-PK1 epithelial cells using calcein-AM polarisation assay	[PMID: 12699389]
LLC-PK1	IC₅₀	1.4 μM Compound: Terfenadine	TP_TRANSPORTER: inhibition of Calcein-AM efflux in MDR1-expressing LLC-PK1 cells TP_TRANSPORTER: inhibition of Calcein-AM efflux in MDR1-expressing LLC-PK1 cells	[PMID: 12699389]
LLC-PK1	IC₅₀	2 μM Compound: Terfenadine	Inhibition of P-glycoprotein, mouse L-mdr1b expressed in LLC-PK1 epithelial cells using calcein-AM polarisation assay Inhibition of P-glycoprotein, mouse L-mdr1b expressed in LLC-PK1 epithelial cells using calcein-AM polarisation assay	[PMID: 12699389]
LLC-PK1	IC₅₀	2 μM Compound: Terfenadine	TP_TRANSPORTER: inhibition of Calcein-AM efflux in Mdr1b-expressing LLC-PK1 cells TP_TRANSPORTER: inhibition of Calcein-AM efflux in Mdr1b-expressing LLC-PK1 cells	[PMID: 12699389]
LLC-PK1	IC₅₀	23 μM Compound: Terfenadine	Inhibition of P-glycoprotein, mouse L-mdr1a expressed in LLC-PK1 epithelial cells using calcein-AM polarisation assay Inhibition of P-glycoprotein, mouse L-mdr1a expressed in LLC-PK1 epithelial cells using calcein-AM polarisation assay	[PMID: 12699389]
LLC-PK1	IC₅₀	23 μM Compound: Terfenadine	TP_TRANSPORTER: inhibition of Calcein-AM efflux in Mdr1a-expressing LLC-PK1 cells TP_TRANSPORTER: inhibition of Calcein-AM efflux in Mdr1a-expressing LLC-PK1 cells	[PMID: 12699389]
NIH-3T3-G185	IC₅₀	1.8 μM Compound: Terfenadine	TP_TRANSPORTER: inhibition of Daunorubicin efflux in NIH-3T3-G185 cells TP_TRANSPORTER: inhibition of Daunorubicin efflux in NIH-3T3-G185 cells	[PMID: 11716514]
NIH-3T3-G185	IC₅₀	2.5 μM Compound: Terfenadine	TP_TRANSPORTER: inhibition of LDS-751 efflux in NIH-3T3-G185 cells TP_TRANSPORTER: inhibition of LDS-751 efflux in NIH-3T3-G185 cells	[PMID: 11716514]
NIH-3T3-G185	IC₅₀	2.7 μM Compound: Terfenadine	TP_TRANSPORTER: inhibition of Rhodamine 123 efflux in NIH-3T3-G185 cells TP_TRANSPORTER: inhibition of Rhodamine 123 efflux in NIH-3T3-G185 cells	[PMID: 11716514]
Sf9	IC₅₀	8.1 μM Compound: terfenadine	Inhibition of human recombinant CYP2J2 expressed in baculovirus-infected Sf9 insect cells Inhibition of human recombinant CYP2J2 expressed in baculovirus-infected Sf9 insect cells	[PMID: 16495056]
Ventricular myocyte	IC₅₀	375 nM Compound: Terfenadine	Inhibition of calcium current (ICaL) measured using whole-cell patch clamp experiments in isolated guinea pig ventricular myocytes Inhibition of calcium current (ICaL) measured using whole-cell patch clamp experiments in isolated guinea pig ventricular myocytes	[PMID: 21300721]
Ventricular myocyte	IC₅₀	0.142 μM Compound: Terfenadine	Inhibition of L-type calcium channel measured using whole-cell patch clamp in rat ventricular myocytes Inhibition of L-type calcium channel measured using whole-cell patch clamp in rat ventricular myocytes	[PMID: 22761000]

In Vitro

Terfenadine ((±)-Terfenadine) (4-20 μM; 24 hours) induces dose and time-dependent apoptosis on A375 melanoma cells. The IC₅₀ after 24 h of TEF treatment in complete medium was 10.4 μM for A375 cells, 9.9 μM for Hs294T cells and 9.6 for HT144 cells^[2].
Terfenadine (2-10 μM; 8 hours) induces dose-dependent cytotoxicity^[2].
Terfenadine (10 μM; 8 hours) causes a massive vacuolization of the cytoplasm and autophagic vacuoles of both double and multiple membranes and at various stages. Terfenadine induces autophagy by ROS-dependent and -independent mechanisms^[2].

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

Apoptosis Analysis^[2]

Cell Line:

A375, HT144 and Hs294T cells
Concentration:

4, 8, 12, 16, 20 μM
Incubation Time:

24 hours
Result:

Induced dose and time-dependent apoptosis.

Cell Cytotoxicity Assay^[2]

Cell Line:

A375 melanoma cells
Concentration:

2, 4, 6, 8, 10 μM
Incubation Time:

8 hours
Result:

Induces dose-dependent cytotoxicity.

Cell Autophagy Assay^[2]

Cell Line:

A375 cells
Concentration:

10 μM
Incubation Time:

8 hours
Result:

Caused a massive vacuolization of the cytoplasm and autophagic vacuoles of both double and multiple membranes and at various stages.

In Vivo

Terfenadine (p.o.; 40 mg/kg; for 16 days) produces a significant inhibition of tumour growth rate and enhances the anti-cancer effect of EPI in chemo-resistant NSCLC xenograft models^[3].

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

Animal Model:

6-week-old male BALB/cA-nu mice^[3]
Dosage:

40 mg/kg
Administration:

P.o.; for 16 days
Result:

Produced a significant inhibition of tumour growth rate.

Chemical Information

CAS No. 50679-08-8
Appearance Solid
Molecular Weight 471.67
Formula C₃₂H₄₁NO₂
Color White to off-white
SMILES

OC(C1=CC=C(C(C)(C)C)C=C1)CCCN2CCC(C(C3=CC=CC=C3)(O)C4=CC=CC=C4)CC2
Synonyms

(±)-Terfenadine; MDL-991
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	2 years
	-20°C	1 year

Publications (4)

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ACS Nano

Single-Molecule-Based, Label-Free Monitoring of Molecular Glue Efficacies for Promoting Protein-Protein Interactions Using YaxAB Nanopores. [Abstract]

2024 Nov 12;18(45):31451-31465. PMID: 39482865
Front Immunol

Anti-PD1 does not improve pyroptosis induced by γδ T cells but promotes tumor regression in a pleural mesothelioma mouse model. [Abstract]

2023 Nov 23;14:1282710. PMID: 38077396
Mol Oncol

YAP1::TFE3 mediates endothelial-to-mesenchymal plasticity in epithelioid hemangioendothelioma. [Abstract]

2025 Aug 17. PMID: 40819258
Purdue University

2025 Jul 23.

Solvent & Solubility

In Vitro:

DMSO : ≥ 50 mg/mL (106.01 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H₂O : < 0.1 mg/mL (insoluble)

* "≥" means soluble, but saturation unknown.

View the Complete Stock Solution Preparation Table

Preparing Stock Solutions

View the Complete Stock Solution Preparation Table

Concentration Solvent Mass

1 mg

5 mg

10 mg

Concentration

Solvent

Mass

1 mM

2.1201 mL

10.6006 mL

21.2013 mL

5 mM

0.4240 mL

2.1201 mL

4.2403 mL

10 mM

0.2120 mL

1.0601 mL

2.1201 mL

Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.

Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Molarity Calculator

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

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Concentration

Volume

Molecular Weight

Dilution Calculator

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

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In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

Stock Solution Working Solution

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

Protocol 1

Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline

Solubility: ≥ 2.5 mg/mL (5.30 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

Protocol 2

Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)

Solubility: ≥ 2.5 mg/mL (5.30 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

Protocol 3

Add each solvent one by one: 10% DMSO 90% Corn Oil

Solubility: ≥ 2.5 mg/mL (5.30 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

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mg/kg
Animal Weight (Per Animal)
g
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Please enter your animal formula composition:

%
DMSO +

Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
%
+
+
%
Tween-80 + +
%
Saline +

The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).

Working solution concentration: 0.22 mg/mL

Purity & Documentation

Select Batch:

Purity: 99.98%

Assay: 99.98%

ee.: 99.98%

Data Sheet (277 KB)
SDS (398 KB)
- English - EN (398 KB)
- Français - FR (398 KB)
- Deutsch - DE (398 KB)
- Norwegian - NO (398 KB)
- Español - ES (398 KB)
- Swedish - SV (398 KB)
- Italian - IT (398 KB)
- Portuguese - PT (398 KB)
COA (2659 KB)
Elemental Analysis Report (2659 KB)
HNMR (2659 KB)
CNMR (2659 KB)
RP-HPLC (2659 KB)
NP-HPLC (2659 KB)
MS (2659 KB)
LCMS (2659 KB)
IR (2659 KB)
GC (2659 KB)
OR (2659 KB)
SDS-PAGE (2659 KB)
SEC-HPLC (2659 KB)
Other Report (2659 KB)
Handling Instructions (2659 KB)

References

[1]. Kamiya K, et al. Molecular determinants of hERG channel block by terfenadine and cisapride. J Pharmacol Sci. 2008 Nov;108(3):301-307. [Content Brief]

[2]. Nicolau-Galmés F, et al. Terfenadine induces apoptosis and autophagy in melanoma cells through ROS-dependent and -independent mechanisms. Apoptosis. 2011 Dec;16(12):1253-67. [Content Brief]

[3]. An L, et al. Terfenadine combined with epirubicin impedes the chemo-resistant human non-small cell lung cancer both in vitro and in vivo through EMT and Notch reversal. Pharmacol Res. 2017 Oct;124:105-115. [Content Brief]

Help & FAQs

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.

Complete Stock Solution Preparation Table

Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg
DMSO	1 mM	2.1201 mL	10.6006 mL	21.2013 mL	53.0032 mL
	5 mM	0.4240 mL	2.1201 mL	4.2403 mL	10.6006 mL
	10 mM	0.2120 mL	1.0601 mL	2.1201 mL	5.3003 mL
	15 mM	0.1413 mL	0.7067 mL	1.4134 mL	3.5335 mL
	20 mM	0.1060 mL	0.5300 mL	1.0601 mL	2.6502 mL
	25 mM	0.0848 mL	0.4240 mL	0.8481 mL	2.1201 mL
	30 mM	0.0707 mL	0.3534 mL	0.7067 mL	1.7668 mL
	40 mM	0.0530 mL	0.2650 mL	0.5300 mL	1.3251 mL
	50 mM	0.0424 mL	0.2120 mL	0.4240 mL	1.0601 mL
	60 mM	0.0353 mL	0.1767 mL	0.3534 mL	0.8834 mL
	80 mM	0.0265 mL	0.1325 mL	0.2650 mL	0.6625 mL
	100 mM	0.0212 mL	0.1060 mL	0.2120 mL	0.5300 mL

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Terfenadine

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Publications Citing Use of MedChemExpress (MCE) Terfenadine

All Histamine Receptor Isoforms

All Caspase Isoforms

Biological Activity

Chemical Information

Publications (4)

Solvent & Solubility

Purity & Documentation

References

Help & FAQs

Complete Stock Solution Preparation Table

Terfenadine Related Classifications

Cat. No.: HY-B1193