Azatadine dimaleate

Catalog No.S3186 Synonyms: SCH10649

For research use only.

Azatadine (SCH10649) is an histamine and cholinergic inhibitor with IC50 of 6.5 nM and 10 nM, respectively.

Azatadine dimaleate Chemical Structure

CAS No. 3978-86-7

Selleck's Azatadine dimaleate has been cited by 1 Publication

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Biological Activity

Description Azatadine (SCH10649) is an histamine and cholinergic inhibitor with IC50 of 6.5 nM and 10 nM, respectively.
Histamine receptor [1] Cholinergic [1]
6.5 nM 10 nM
In vitro

95% of Azatadine is biotransformed in Sabouraud dextrose broth within 72 hours treatment with two major metabolites, 7-hydroxyazatadine (25%) and 8-hydroxyazatadine (50%), and two minor metabolites, N-desmethylazatadine and 9-hydroxyazatadine. [2]

In vivo Azatadine delays the onset of dyspnea-induced by aerosolized histamine, acetylcholine and serotonin in the conscious guinea-pig with PD50 of 0.01 mg/kg, 0.739 mg/kg and 0.86 mg/kg. Azatadine protects conscious guinea-pigs against death induced by the intravenous injection of histamine with oral PD50 of 0.009 mg/kg in guinea-pig and 0.22 mg/kg in mice. [1] Following a single oral dose of Azatadine (4 mg) in fasted volunteers, a Cmax of 3 μg/L has been measured by RIA 4.2 hours after administration. Azatadine is almost completely metabolised by hydroxylation, demethylation and formation of zwitterion isomers by oxidative ring opening. Azatadine (8.8 mg oral) in healthy volunteers results in a Csub>max of 5.9 μg/L at 5.3 hours after treatment and bioavailability of 80%. [3] Azatadine (1 mg twice daily for 14 days) is effective in relieving the histamine-mediated symptoms of seasonal allergic rhinitis. [4]

Protocol (from reference)

Solubility (25°C)

In vitro

DMSO 105 mg/mL
(200.93 mM)
Water 105 mg/mL
(200.93 mM)
Ethanol Insoluble

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 522.55


CAS No. 3978-86-7
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CN1CCC(=C2C3=CC=CC=C3CCC4=C2N=CC=C4)CC1.C(=CC(=O)O)C(=O)O.C(=CC(=O)O)C(=O)O

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Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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