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Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:


chloroform: soluble 250 mg plus 5 ml of solvent, clear to very slightly hazy, colorless to faintly yellow
H2O: soluble 0.01 mg/mL at 30 °C
1 M HCl: soluble 0.12 mg/mL at 30 °C
hexane: soluble 0.34 mg/mL at 30 °C
0.1 M tartaric acid: soluble 0.45 mg/mL
0.1 M citric acid: soluble 1.1 mg/mL
methanol: soluble 37.5 mg/mL at 30 °C
ethanol: soluble in salt form 37.8 mg/mL at 30 °C


Sanofi Aventis

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Terfenadine has been used as a positive control in electrophysiology recordings. It has also been used as a constituent of internal standard solution in liquid chromatography-mass spectrometry (LC-MS).
Terfenadine has been used to study the role of histamine in itch related to proteinase-activated receptors (PARs) in mice. Terfenadine has also been used to block histamine receptor type 1 to study the pathogenesis of 2,4-dinitrobenzene sulfonic acid (DNBS)-induced ulcerative colitis in rats.


5, 25 g in poly bottle

Biochem/physiol Actions

Non-sedating second generation H1 histamine receptor antagonist. Mainly metabolized by Cyp3A4, 5, 7. Inhibits CYP2C8.
Terfenadine acts a potential anti-histamine and is used in the treatment of allergic rhinitis and chronic urticaria.

Features and Benefits

This compound is featured on the Potassium Channels page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
This compound is a featured product for ADME Tox research. Click here to discover more featured ADME Tox products. Learn more about bioactive small molecules for other areas of research at
This compound was developed by Sanofi Aventis. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Preparation Note

250 mg of Terfenadine dissolves in 5ml of chloroform to yield a clear, colorless solution. Terfenadine is also soluble at 30° C in 0.1 M citric acid (1.1 mg/ml), water (0.01 mg/ml), methanol (37.5 mg/ml), hexane (0.34 mg/ml), ethanol (37.8 mg/ml), 1 M hydrochloric acid (0.12 mg/ml), and 0.1 M tartaric acid (0.45 mg/ml).

Other Notes

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. T9652.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit

Hazard Statements

Precautionary Statements

Hazard Classifications

Aquatic Chronic 4

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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Product Information Sheet

More documents

Quotes and Ordering

Hiroyuki Kusuhara et al.
Drug metabolism and disposition: the biological fate of chemicals, 41(1), 206-213 (2012-11-02)
The effect of rifampicin on the pharmacokinetics of fexofenadine enantiomers was examined in healthy subjects who received fexofenadine alone or with single or multiple doses of rifampicin (600 mg). A single coadministered dose of rifampicin significantly decreased the oral clearance
H Ohtani et al.
The Journal of pharmacy and pharmacology, 51(9), 1059-1063 (1999-10-21)
We examined and compared the inhibitory effects of three non-sedating antihistamines, terfenadine, ebastine, and epinastine, on delayed rectifier potassium current (IK) and transient outward potassium current (Ito) of rat isolated ventricular myocytes, using a patch clamp technique. Terfenadine, ebastine and
Naoki Inagaki et al.
European journal of pharmacology, 448(2-3), 175-183 (2002-07-30)
Compound 48/80 induced scratching behavior in BALB/c mice, and the role of mast cell mediators in this behavior was examined. Mouse scratching behavior was detected and evaluated using a new apparatus, MicroAct. Compound 48/80 increased the incidence of scratching behavior
McTavish D, et al.
Drugs, 39, 552-574 (1990)
Marine algal toxin azaspiracid is an open-state blocker of hERG potassium channels
Twiner MJ, et al.
Chemical Research in Toxicology, 25(9), 1975-1984 (2012)

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