Methapyrilene

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Methapyrilene
Systematic (IUPAC) name
2-((2-(Dimethylamino)ethyl)-2-thenylamino)pyridine
Identifiers
CAS number	91-80-5
ATC code	R06AC05
PubChem	4098
Chemical data
Formula	C₁₄H₁₉N₃S
Mol. mass	261.387
Pharmacokinetic data
Bioavailability	?
Metabolism	?
Half life	?
Excretion	?
Therapeutic considerations
Pregnancy cat.	?
Legal status
Routes	?

Methapyrilene is a pyridine antihistamine which was developed in the early 1950s. It has relatively strong sedative effects, to the extent that its primary use was as a medication for insomnia rather than for its antihistamine action. Methapyrilene is no longer used in most countries because it has been known to cause liver damage which can be potentially serious.

v • d • e Antihistamines (primarily R06)
Aminoalkyl ethers	Bromazine, Carbinoxamine, Clemastine, Chlorphenoxamine, Diphenylpyraline, Diphenhydramine, Doxylamine
Substituted alkylamines	Brompheniramine, Chlorphenamine, Dexbrompheniramine , Dexchlorpheniramine, Dimetindene, Pheniramine, Talastine
Substituted ethylene diamines	Chloropyramine, Histapyrrodine, Mepyramine, Methapyrilene,Pyribenzamine
Phenothiazine derivatives	Alimemazine, Hydroxyethylpromethazine, Isothipendyl, Mequitazine, Methdilazine, Oxomemazine, Promethazine
Piperazine derivatives	Buclizine, Cetirizine, Chlorcyclizine, Cinnarizine, Cyclizine, Hydroxyzine, Levocetirizine, Meclozine, Niaprazine, Oxatomide
Others for systemic use	Acrivastine, Antazoline, Astemizole, Azatadine, Azelastine, Bamipine, Cyproheptadine, Deptropine, Desloratadine, Ebastine, Epinastine, Ketotifen, Loratadine, Mebhydrolin, Mizolastine, Phenindamine, Pimethixene, Pyrrobutamine, Rupatadine, Terfenadine, Triprolidine
For topical use	Bamipine, Chloropyramine, Chlorphenoxamine, Clemastine, Dimetindene, Diphenhydramine, Isothipendyl, Mepyramine, Promethazine, Thenalidine
Antiallergic agents excluding corticosteroids	Antazoline, Azelastine, Fexofenadine
Other antiallergics	Emedastine, Epinastine, Ketotifen, Olopatadine

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Methapyrilene

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