Bepotastine Besilate

Catalog No. Size PriceQuantity
M7278-2 2mg solid $90
M7278-10 10mg solid $270


Bepotastine besilate is a selective antagonist of histamine 1 (H1) receptor with pIC50 of 5.7.

Product information

CAS Number: 190786-44-8

Molecular Weight: 547.06

Formula: C27H31ClN2O6S


TAU 284

Chemical Name: (S)-4-(4-((4-chlorophenyl)(pyridin-2-yl)methoxy)piperidin-1-yl)butanoic acid compound with benzenesulfonic acid (1:1)

Smiles: OC(=O)CCCN1CCC(CC1)O[C@@H](C1=CC=C(Cl)C=C1)C1=CC=CC=N1.OS(=O)(=O)C1C=CC=CC=1


InChi: InChI=1S/C21H25ClN2O3.C6H6O3S/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;7-10(8,9)6-4-2-1-3-5-6/h1-2,4,6-9,12,18,21H,3,5,10-11,13-15H2,(H,25,26);1-5H,(H,7,8,9)/t21-;/m0./s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO: 109 mg/mL(199.24 mM). Water: Insoluble.

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

The flux ratios of [14C]Bepotastine (5 μM) in LLC-GA5-COL150 cells are significantly greater than those in LLC-PK1, showing that the B-to-A flux exceeds those in the other direction in LLC-GA5-COL150 cells. Bepotastine stimulates P-gp-mediated ATP hydrolysis with Km, Vmax, and Vmax/Km values of 1.25 mM, 108 nmol/min/mg protein, and 0.087 mL/min/mg protein, respectively. [2] Bepotastine besilate (100 mM) suppresses Leukotriene B(4) induced Ca(2+) concentration in cultured dorsal root ganglion neurons and cultured neutrophils. [3] Bepotastine (100 μM) dose-dependently inhibits chemotaxis of cultured guinea pig peritoneal eosinophils induced by LTB4. Bepotastine (1 mM) significantly reduces A23187-induced histamine release of cultured rat peritoneal mast cells. [4]

In Vivo:

Bepotastine (0.8 mg/kg) administrated in WT and P-gp KO mice results in the plasma total concentrations 580 ng/mL and 467 ng/mL at 6 min after dosing, respectively, and the plasma protein binding with 41.1% and 45.9%. The absorption of [14C]Bepotastine from the proximal region in the presence and absence of verapamil is 63.0% and 72.4%, respectively, and that from the distal region is 10.9% and 62.7%, respectively. [2] Bepotastine besilate (10 mg/kg) inhibits scratching induced by an intradermal injection of histamine (100 nmol/site), but not serotonin (100 nmol/site). Bepotastine besilate (1 mg/kg-10 mg/kg, oral) dose-dependently suppresses scratching induced by substance P (100 nmol/site) and leukotriene B(4) (0.03 nmol/site). [3] Bepotastine besilate significantly inhibits conjunctival vascular hyperpermeability in a dose-dependent manner in guinea pig allergic conjunctivitis models with maximal effect for Bepotastine besilate 1.5%. [4] Bepotastine (3 mg/kg and 10 mg/kg) effectively inhibits the compound 48/80-induced scratching behavior of BALB/c mice 1 hour after oral administration. Bepotastine (10 mg/kg) also significantly inhibits the scratching behavior and suppresses the serum LTB(4) levels in atopic dermatitis model NC/Nga mice. [5]


  1. Da Prada M, et al. J Pharmacol Exp Ther, 1989, 248(1), 400-414.
  2. Ohashi R, et al. Drug Metab Dispos, 2006, 34(5), 793-799.
  3. Andoh T, et al. Eur J Pharmacol, 2006, 547(1-3), 59-64.
  4. Kida T, et al. Exp Eye Res, 2010, 91(1), 85-91.
  5. Tanizaki H, et al. Int Arch Allergy Immunol, 2008, 145(4), 277-2
  6. [5] Tanizaki H, et al. Int Arch Allergy Immunol, 2008, 145(4), 277-2

Products are for research use only. Not for human use.

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