Chemical Name: 5-[2-(Imidazol-4-yl)ethyl]isothiourea dihydrobromide
Purity: ≥98% (HPLC)
Biological Activity
Technical Data
Solubility
Calculators
Datasheets
References
Biological Activity
An extremely potent, high affinity agonist at H3 and H4 receptors (Ki values are 0.3 and 2.7 nM respectively). Induces shape change in eosinophils with an EC50 of 25 nM. Centrally active following systemic administration. Also available as part of the Histamine H3 Receptor Tocriset™.
Technical Data
M. Wt
332.06
Formula
C6H10N4S.2HBr
Storage
Store at RT
Purity
≥98% (HPLC)
CAS Number
32385-58-3
PubChem ID
11957573
InChI Key
DOBOYMKCRRLTRF-UHFFFAOYSA-N
Smiles
Br.Br.NC(=N)SCCC1=CNC=N1
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.
Solubility Data
Solvent
Max Conc. mg/mL
Max Conc. mM
Solubility
water
33.21
100
Preparing Stock Solutions
The following data is based on the product molecular weight 332.06. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
Concentration / Solvent Volume / Mass
1 mg
5 mg
10 mg
1 mM
3.01 mL
15.06 mL
30.12 mL
5 mM
0.6 mL
3.01 mL
6.02 mL
10 mM
0.3 mL
1.51 mL
3.01 mL
50 mM
0.06 mL
0.3 mL
0.6 mL
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Product Datasheets
Certificate of Analysis / Product Datasheet
Safety Datasheet
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References
References are publications that support the products' biological activity.
Farzin and Attarzadeh
(2000) Influence of different histamine receptor agonists and antagonists on apomorphine-induced licking behavior in rats. Eur.J.Pharmacol. 404 169 PMID: 10980276
Garbarget al (1992) S-[2-(4-Imidazolyl)ethyl]isothiourea, a highly specific and potent histamine H3 receptor agonist. J.Pharmacol.Exp.Ther. 263 304 PMID: 1383495
Linget al (2004) Histamine H4 receptor mediates eosinophil chemotaxis with cell shape change and adhesion molecule upregulation. Br.J.Pharmacol. 142 161 PMID: 15131002