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Merck
CN

A6424

Astemizole

≥99%

Synonym(s):

1-(4-Fluorobenzyl)-2-(1-[4-methoxyphenethyl]piperidin-4-yl)aminobenzimidazole

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About This Item

Empirical Formula (Hill Notation):
C28H31FN4O
CAS Number:
68844-77-9
Molecular Weight:
458.57
UNSPSC Code:
12352100
PubChem Substance ID:
24891087
EC Number:
272-441-9
MDL number:
MFCD00153919

Key Documents

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SMILES string

COc1ccc(CCN2CCC(CC2)Nc3nc4ccccc4n3Cc5ccc(F)cc5)cc1

assay

≥99%

Gene Information

human ... ABCB1(5243), CYP3A4(1576), HRH1(3269), IL4(3565), IL5(3567), KCNH1(3756), KCNH2(3757)
mouse ... Abcb1a(18671), Abcb1b(18669)
rat ... Hrh1(24448)

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Biochem/physiol Actions

Non-sedating anti-histaminergic drug. Substrate for CYP3A4,5,7. Inhibitor of Pgp-mediated drug efflux and Pgp labeling by [3H]azidopine. Potential for combination therapy with anticancer drugs such as doxorubicin in resistant leukemia.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
087K1207
040K1522
113K0704
083H0928
065H0195

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Tjøstil Vlaar et al.
Angewandte Chemie (International ed. in English), 51(52), 13058-13061 (2012-11-20)
O(2) in, H(2)O out: Various diamines and related bisnucleophiles readily undergo oxidative isocyanide insertion with Pd(OAc)(2) (1 mol %) as the catalyst and O(2) as the terminal oxidant to give a diverse array of medicinally relevant N heterocycles. The utility
M F Nilsson et al.
Reproductive toxicology (Elmsford, N.Y.), 29(2), 156-163 (2010-02-11)
Drugs blocking the potassium current IKr of the heart (via hERG channel-inhibition) have the potential to cause hypoxia-related teratogenic effects. However, this activity may be missed in conventional teratology studies because repeat dosing may cause resorptions. The aim of the
Chitalu C Musonda et al.
Bioorganic & medicinal chemistry letters, 19(2), 481-484 (2008-12-05)
A dual activity, conjugated approach has been taken to form hybrid molecules of two known antimalarial drugs, chloroquine (CQ) and the non-sedating H1 antagonist astemizole. A variety of linkers were investigated to conjugate the two agents into one molecule. Compounds
Fumimasa Nomura et al.
Journal of nanobiotechnology, 9, 39-39 (2011-09-21)
Conventional in vitro approach using human ether-a-go-go related gene (hERG) assay has been considered worldwide as the first screening assay for cardiac repolarization safety. However, it does not always oredict the potential QT prolongation risk or pro-arrhythmic risk correctly. For
K A Rao et al.
Mayo Clinic proceedings, 69(6), 589-593 (1994-06-01)
An overdose of astemizole predisposes the myocardium to ventricular dysrhythmias, including torsades de pointes. Herein we describe a case of astemizole-induced torsades de pointes ventricular tachycardia and also review previous case reports in the literature. All the patients were young
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