Catalog No. Size PriceQuantity
M7320-2 2mg solid $100
M7320-10 10mg solid $315


Emedastine is a potent, high affinity histamine H1-receptor-selective antagonist with Ki of 1.3 ±0.1 nM for H1-receptors while considerably weaker at H2- (Ki = 49,067 ± 11,113 nM) and H3-receptors (Ki = 12,430 ± 1,282 nM).

Product information

CAS Number: 87233-61-2

Molecular Weight: 302.41

Formula: C17H26N4O

Chemical Name: 1-(2-ethoxyethyl)-2-(4-methyl-1,4-diazepan-1-yl)-1H-1,3-benzodiazole



InChi: InChI=1S/C17H26N4O/c1-3-22-14-13-21-16-8-5-4-7-15(16)18-17(21)20-10-6-9-19(2)11-12-20/h4-5,7-8H,3,6,9-14H2,1-2H3

Technical Data

Appearance: Solid Power

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

Solubility: Soluble in DMSO

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:

Emedastine is capable of potently inhibiting histamine-induced cytokine release as well as the chemotaxis of eosinophils, thereby influencing factors contributing to the inhibition of the signs and symptoms of allergic diseases.

In Vivo:

In human, the half-life of emedastine, when administered as slow release capsules is of about 6±7 h.


  1. Sharif NA, et al. Emedastine: a potent, high affinity histamine H1-receptor-selective antagonist for ocular use: receptor binding and second messenger studies. J Ocul Pharmacol. 1994 Winter;10(4):653-64.
  2. Murota H, et al. Emedastine difumarate: a review of its potential ameliorating effect for tissue remodeling in allergic diseases. Expert Opin Pharmacother. 2009 Aug;10(11):1859-67.
  3. Andoh T, et al. Involvement of blockade of leukotriene B(4) action in anti-pruritic effects of emedastine in mice. Eur J Pharmacol. 2000 Oct 6;406(1):149-52.

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

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