CHLORPHENIRAMINE MALEATE

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Search structure


Trade Names	ANTAGONATE CHLOR-TRIMETON CHLORPHENIRAMINE MALEATE EFIDAC 24 CHLORPHENIRAMINE MALEATE KLOROMIN PHENETRON PYRIDAMAL 100 TELDRIN
Synonyms	(+)-Chlorpheniramine Maleate Allercalm allergy relief Allerief Alunex Antagonate Calimal Chlor-trimeton Chlorphenamine Chlorphenamine hydrogen maleate Chlorphenamine maleate Chlorphenamini hydrogenomaleas Chlorpheniramine Maleate Chlorpheniramine maleate Chlorprophenpyridamine maleate Efidac
Status
Molecule Category	Mixture
UNII	V1Q0O9OJ9Z
EPA CompTox	DTXSID4020321

Structure


InChI Key	DBAKFASWICGISY-BTJKTKAUSA-N
Smiles	CN(C)CCC(c1ccc(Cl)cc1)c1ccccn1.O=C(O)/C=C\C(=O)O
InChI	InChI=1S/C16H19ClN2.C4H4O4/c1-19(2)12-10-15(16-5-3-4-11-18-16)13-6-8-14(17)9-7-13;5-3(6)1-2-4(7)8/h3-9,11,15H,10,12H2,1-2H3;1-2H,(H,5,6)(H,7,8)/b;2-1-

Physicochemical Descriptors

Property Name	Value
Molecular Formula	C20H23ClN2O4
Molecular Weight	390.87
AlogP	3.82
Hydrogen Bond Acceptor	2.0
Number of Rotational Bond	5.0
Polar Surface Area	16.13
Molecular species	BASE
Aromatic Rings	2.0
Heavy Atoms	19.0

Pharmacology

Mechanism of Action	Action	Reference
Histamine H1 receptor antagonist	ANTAGONIST	PubMed PubMed

Targets	EC50(nM)	IC50(nM)	Kd(nM)	Ki(nM)	Inhibition(%)
Membrane receptor Family A G protein-coupled receptor Small molecule receptor (family A GPCR) Monoamine receptor Histamine receptor	-	0.000291-12	-	-	-

	EC50(nM)	IC50(nM)	Kd(nM)	Ki(nM)	Inhibition(%)
Cavia porcellus	-	0.000291-12	-	-	-
Mus musculus	-	-	-	-	71.8
Plasmodium falciparum	-	398.11	-	-	-
Sus scrofa	-	-	-	-	70.09

Target Conservation


Protein: Histamine H1 receptor Description: Histamine H1 receptor Organism : Homo sapiens P35367 ENSG00000196639

Cross References

Resources	Reference
CAS NUMBER	113-92-8
ChEBI	3645
ChEMBL	CHEMBL1659
FDA SRS	V1Q0O9OJ9Z
KEGG	C07780
PubChem	5281068
SureChEMBL	SCHEMBL33357

CONTENTS

EcoDrug+ was developed under the PREMIER Innovative Medicines Initiative 2 Joint Undertaking (JU) under grant agreement No 875508. The JU receives support from the EU’s Horizon 2020 research and innovation programme and the European Federation of Pharmaceutical Industries and Associations (EFPIA). The views reflect only the authors’ perspective and the JU is not responsible for any use that may be made of the information EcoDrug+ contains.

Elements of EcoDrug+ were developed under the Biocenter Finland Drug Discovery and Chemical Biology network. CSC-IT Center for Science Ltd is thanked for providing computational resources. Credit is given to Ensembl for collecting species images (provided under public domain licences such as Wikimedia and NHGRI).

Content of EcoDrug+ is provided without guarantee for correctness.

Cite Us:

Ashenafi Legehar, Siobhán Monaghan, Mael Briand, Akseli Niemelä, Leo Ghemtio, Ziaurrehman Tanoli, A Ross Brown, Charles R Tyler, Henri Xhaard, EcoDrug PLUS: an advanced database for drug target conservation analysis and environmental risk assessment, Nucleic Acids Research, Volume 54, Issue D1, 6 January 2026, Pages D1397–D1404, https://doi.org/10.1093/nar/gkaf1251

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Last update: Monday, 23^rd March 2026