Record Information
Version1.0
Creation Date2009-07-21 20:28:59 UTC
Update Date2026-05-14 18:11:26 UTC
Accession NumberCHEM002408
Identification
Common NameBepotastine
ClassSmall Molecule
DescriptionBepotastine is a non-sedating, selective antagonist of the histamine 1 (H1) receptor. Bepotastine was approved in Japan for use in the treatment of allergic rhinitis and uriticaria/puritus in July 2000 and January 2002, respectively, and is marketed by Tanabe Seiyaku Co., Ltd. under the brand name Talion. It is available in oral and opthalmic dosage forms in Japan. The opthalmic solution is FDA approved since Sept 8, 2009 and is under the brand name Bepreve.
Contaminant Sources
  • HMDB Contaminants - Urine
  • T3DB toxins
Contaminant Type
  • Amine
  • Anti-Allergic Agent
  • Drug
  • Ether
  • Histamine H1 Antagonist, Non-Sedating
  • Mast Cell Stabilizer
  • Metabolite
  • Organic Compound
  • Organochloride
  • Synthetic Compound
Chemical Structure
Thumb
Synonyms
ValueSource
TAU-284DSHMDB
Chemical FormulaC21H25ClN2O3
Average Molecular Mass388.888 g/mol
Monoisotopic Mass388.155 g/mol
CAS Registry Number125602-71-3
IUPAC Name4-{4-[(4-chlorophenyl)(pyridin-2-yl)methoxy]piperidin-1-yl}butanoic acid
Traditional Nametalion
SMILESOC(=O)CCCN1CCC(CC1)OC(C1=CC=C(Cl)C=C1)C1=CC=CC=N1
InChI IdentifierInChI=1S/C21H25ClN2O3/c22-17-8-6-16(7-9-17)21(19-4-1-2-12-23-19)27-18-10-14-24(15-11-18)13-3-5-20(25)26/h1-2,4,6-9,12,18,21H,3,5,10-11,13-15H2,(H,25,26)
InChI KeyYWGDOWXRIALTES-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as benzylethers. These are aromatic ethers with the general formula ROCR' (R = alkyl, aryl; R'=benzene).
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzylethers
Direct ParentBenzylethers
Alternative Parents
Substituents
  • Benzylether
  • Amino fatty acid
  • Chlorobenzene
  • Halobenzene
  • Aryl chloride
  • Aryl halide
  • Fatty acyl
  • Pyridine
  • Piperidine
  • Heteroaromatic compound
  • Amino acid or derivatives
  • Amino acid
  • Tertiary aliphatic amine
  • Tertiary amine
  • Carboxylic acid derivative
  • Carboxylic acid
  • Azacycle
  • Dialkyl ether
  • Ether
  • Organoheterocyclic compound
  • Monocarboxylic acid or derivatives
  • Organic oxygen compound
  • Organic nitrogen compound
  • Amine
  • Carbonyl group
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organohalogen compound
  • Organochloride
  • Organonitrogen compound
  • Organooxygen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
Applications
Biological Roles
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
Solubility5.03e-02 g/L
Predicted Properties
PropertyValueSource
Water Solubility0.05 g/LALOGPS
logP3.64ALOGPS
logP0.55ChemAxon
logS-3.9ALOGPS
pKa (Strongest Acidic)4.1ChemAxon
pKa (Strongest Basic)9.39ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area62.66 ŲChemAxon
Rotatable Bond Count8ChemAxon
Refractivity105.1 m³·mol⁻¹ChemAxon
Polarizability42.18 ųChemAxon
Number of Rings3ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0udi-2292000000-5b45fd7805bbbd416e7fSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-0udi-2192000000-0ea685d018da4a2938deSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0079-0109000000-324c9088d0c2cb4aac38Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00du-1319000000-6f5aa9888fbcca679b0dSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00du-9820000000-c0621adfa83f3477b8abSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-0019000000-90b8af4e7923949436c2Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00kr-0129000000-4cc6ef36f76266a06698Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-014i-3690000000-f62361da241614f257f0Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-000i-0009000000-dfc0e49e18673a296c13Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0uki-0049000000-192d682169678552ae49Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0uk9-4940000000-4571714c90c45dfd6f35Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-0009000000-2f4b05915f2ae5688d7fSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00ku-2119000000-3967902f22f168d22051Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-014i-5490000000-80c10183c44faf9ff027Spectrum
Toxicity Profile
Route of ExposureOral, Ophthalmic. Tmax, after single dose, opthalmic = 1.2 hours; Cmax, 1.5%, opthalmic dose = 7.3 ± 1.9 ng/mL; After 24 hours post-installation, levels of bepotastine are below quantifiable limit of 2 ng/mL. Minimal systemic absorption with opthalmic dosage form.
Mechanism of ToxicityBecause of a type 1 hypersensitivity reaction cascade that is triggered by antigen exposure, allergic conjunctivitis occurs. Allergen exposure is followed by conjunctival mast cell degranulation and histamine released as a result of the formation of complementary IgE cross-links on the conjunctiva. Due to the release of histamine, symptoms such as itching can be observed. Bepotastine works to relieve itchy eyes by three primary mechanisms of action. It is a non-sedating, selective antagonist of the histamine 1 (H1) receptor, a mast cell stabilizer, and it suppresses the migration of eosinophils into inflamed tissues to prevent tissue damage and worsening of allergic inflammation of the conjunctiva.
MetabolismMinimal metabolism via CYP enzymes Route of Elimination: When a oral dose of 2.5 - 40 mg bepotastine is given, 75%-90% of the dose was excreted unchanged in the urine by 24 hours. Half Life: Elimination half life = 2.5 hours
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesFor the symptomatic treatment of itchy eyes (caused by IgE-induced mast cell degranulation) due to allergic conjunctivitis. Used in the treatment of allergic rhinitis and uriticaria/puritus. [Wikipedia]
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDDB04890
HMDB IDHMDB0015600
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkBepotastine
Chemspider ID2260
ChEBI IDNot Available
PubChem Compound ID2350
Kegg Compound IDNot Available
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis Reference

Tae Hee Ha, Chang Hee Park, Won Jeoung Kim, Soohwa Cho, Han Kyong Kim, Kwee Hyun Suh, “PROCESS FOR PREPARING BEPOTASTINE AND INTERMEDIATES USED THEREIN.” U.S. Patent US20100168433, issued July 01, 2010.

MSDSNot Available
General References
1. Ohashi R, Kamikozawa Y, Sugiura M, Fukuda H, Yabuuchi H, Tamai I: Effect of P-glycoprotein on intestinal absorption and brain penetration of antiallergic agent bepotastine besilate. Drug Metab Dispos. 2006 May;34(5):793-9. Epub 2006 Feb 2.
2. Andoh T, Kuraishi Y: Suppression by bepotastine besilate of substance P-induced itch-associated responses through the inhibition of the leukotriene B4 action in mice. Eur J Pharmacol. 2006 Oct 10;547(1-3):59-64. Epub 2006 Jul 25.
3. Wingard JB, Mah FS: Critical appraisal of bepotastine in the treatment of ocular itching associated with allergic conjunctivitis. Clin Ophthalmol. 2011;5:201-7. doi: 10.2147/OPTH.S8665. Epub 2011 Feb 15.
4. Simons FE, Simons KJ: Histamine and H1-antihistamines: celebrating a century of progress. J Allergy Clin Immunol. 2011 Dec;128(6):1139-1150.e4. doi: 10.1016/j.jaci.2011.09.005. Epub 2011 Oct 27.