Clemizole hydrochloride

≥98% (HPLC)

1-(4-Chlorophenyl)methyl-2-(1-pyrrolidinylmethyl)-1H-benzimidazole hydrochloride, 1-(p-Chlorobenzyl)-2-(1-pyrrolidinylmethyl)benzimidazole hydrochloride, 1-(p-Chlorobenzyl)-2-pyrrolidylmethylenebenzimidazole hydrochloride, CID 2782 hydrochloride, NSC 46261 hydrochloride
Empirical Formula (Hill Notation):
C19H20ClN3 · HCl
Número de CAS:
Peso molecular:
EC Number:
MDL number:
PubChem Substance ID:
En este momento no podemos mostrarle ni los precios ni la disponibilidad

Quality Level


≥98% (HPLC)




white to beige


H2O: 2 mg/mL, clear (warmed)

storage temp.


SMILES string




InChI key


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General description

Clemizole is a potent anti-allergic drug.


5, 25 mg in glass bottle

Biochem/physiol Actions

Clemizole is an antihistamine and an inhibitor of NS4B (nonstructural protein 4B) RNA of HCV (hepatitis C virus). Studies in Scn1α (sodium channel, voltage-gated, type I, α) Zebrafish mutant show that this drug has the potential as a therapeutic agent in Dravet Syndrome treatment.
Clemizole is a potent and preferring inhibitor of TRPC5 that efficiently blocks heterologously expressed homomeric TRPC5 channels as well as heteromeric TRPC1:TRPC5 channels. Clemizole is a potent and selective H1 histamine receptor antagonist. Clemizole inhibited binding of HCV RNA by NS4B inhibit HCV RNA replication in cell culture.


Exclamation mark





NONH for all modes of transport

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Scott C Baraban et al.
Nature communications, 4, 2410-2410 (2013-09-05)
Dravet syndrome is a catastrophic pediatric epilepsy with severe intellectual disability, impaired social development and persistent drug-resistant seizures. One of its primary monogenic causes are mutations in Nav1.1 (SCN1A), a voltage-gated sodium channel. Here we characterize zebrafish Nav1.1 (scn1Lab) mutants...
Clemizole hydrochloride.
Parvez M
Acta Crystallographica Section C, Structural Chemistry, 52(4), 904-905 (1996)
Alberto Arboit et al.
Cells, 9(2) (2020-02-09)
Persistent neural activity has been observed in vivo during working memory tasks, and supports short-term (up to tens of seconds) retention of information. While synaptic and intrinsic cellular mechanisms of persistent firing have been proposed, underlying cellular mechanisms are not...
Caoimhin S Griffin et al.
Scientific reports, 8(1), 9264-9264 (2018-06-20)
Acetylcholine contracts the bladder by binding to muscarinic M3 receptors on the detrusor, leading to Ca2+ influx via voltage-gated Ca2+ channels. The cellular mechanisms linking these events are poorly understood, but studies have suggested that activation of TRPC4 channels could...
Julia M Richter et al.
Molecular pharmacology, 86(5), 514-521 (2014-08-21)
Canonical transient receptor potential channel 5 (TRPC5) is a nonselective, Ca(2+)-permeable cation channel that belongs to the large family of transient receptor potential channels. It is predominantly found in the central nervous system with a high expression density in the...

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