Epinastine

Epinastine
Clinical data


Trade names	Alesion, Elestat, Purivist, Relestat
AHFS/Drugs.com	Monograph
MedlinePlus	a604011
Pregnancy category	C
Routes of administration	Eye drops
ATC code	R06AX24 (WHO) S01GX10 (WHO)
Pharmacokinetic data
Protein binding	64%
Biological half-life	12 hours
Identifiers
IUPAC name (RS)-3-amino-9,13b-dihydro-1H-dibenz(c,f)imidazo(1,5-a)azepine
CAS Number	80012-43-7^Y
PubChem CID	3241
IUPHAR/BPS	7176
DrugBank	DB00751^Y
ChemSpider	3128^Y
UNII	Q13WX941EF
KEGG	D07900^Y
ChEBI	CHEBI:51032^Y
ChEMBL	CHEMBL1106^Y
ECHA InfoCard	100.120.187
Chemical and physical data
Formula	C₁₆H₁₅N₃
Molar mass	249.311 g/mol
3D model (JSmol)	Interactive image
SMILES N\4=C(\N3c1c(cccc1)Cc2c(cccc2)C3C/4)N
InChI InChI=1S/C16H15N3/c17-16-18-10-15-13-7-3-1-5-11(13)9-12-6-2-4-8-14(12)19(15)16/h1-8,15H,9-10H2,(H2,17,18)^Y Key:WHWZLSFABNNENI-UHFFFAOYSA-N^Y
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Epinastine (brand names Alesion, Elestat, Purivist, Relestat) is a second-generation antihistamine and mast cell stabilizer that is used in eye drops to treat allergic conjunctivitis. It is produced by Allergan and marketed by Inspire in the United States.^[1] It is highly selective for the H₁ receptor and does not cross the blood-brain-barrier.^[2]

References

↑ Pradhan, S; Abhishek, K; Mah, F (2009). "Epinastine: topical ophthalmic second generation antihistamine without significant systemic side effects". Expert opinion on drug metabolism & toxicology. 5 (9): 1135–40. PMID 19630694. doi:10.1517/17425250903117284.
↑ Walther G, Daniel H, Bechtel WD, Brandt K (April 1990). "New tetracyclic guanidine derivatives with H1-antihistaminic properties. Chemistry of epinastine". Arzneimittel-Forschung. 40 (4): 440–6. PMID 1972625.

External links

Official U.S. website of Elestat

Antihistamines (R06)
Aminoalkyl ethers	Bromazine (bromodiphenhydramine) Carbinoxamine Clemastine Chlorphenoxamine Diphenylpyraline Diphenhydramine Doxylamine Orphenadrine Phenyltoloxamine
Substituted alkylamines	Brompheniramine Chlorphenamine Dexbrompheniramine (+pseudoephedrine) Dexchlorpheniramine (+betamethasone) Dimetindene Pheniramine Talastine
Substituted ethylenediamines	Chloropyramine Histapyrrodine Mepyramine Methapyrilene Tripelennamine (pyribenzamine)
Phenothiazine derivatives	Alimemazine Fenethazine Hydroxyethylpromethazine Isothipendyl Mequitazine Methdilazine Oxomemazine Promethazine
Piperazine derivatives	Buclizine Cetirizine Levocetirizine Chlorcyclizine Cinnarizine Cyclizine Hydroxyzine Meclizine Oxatomide
Others for systemic use	Antazoline Azanator Azatadine Bamipine Cyproheptadine Deptropine Doxepin Ebastine Emedastine Epinastine Ketotifen Latrepirdine Mebhydrolin Mizolastine Olopatadine Phenindamine Pimethixene Pyrrobutamine Quifenadine Rupatadine Triprolidine selective (Acrivastine Astemizole Azelastine Bilastine Desloratadine Fexofenadine Loratadine Terfenadine)
For topical use	Bamipine Chloropyramine Chlorphenoxamine Clemastine Dimetindene Diphenhydramine Doxepin Isothipendyl Mepyramine Promethazine Thenalidine

Histamine receptor modulators
H₁	Agonists: 2-Pyridylethylamine Betahistine Histamine HTMT L-Histidine UR-AK49 Antagonists: First-generation: 4-Methyldiphenhydramine Alimemazine Antazoline Azatadine Bamipine Benzatropine (benztropine) Bepotastine Bromazine Brompheniramine Buclizine Captodiame Carbinoxamine Chlorcyclizine Chloropyramine Chlorothen Chlorphenamine Chlorphenoxamine Cinnarizine Clemastine Clobenzepam Clocinizine Cloperastine Cyclizine Cyproheptadine Dacemazine Decloxizine Deptropine Dexbrompheniramine Dexchlorpheniramine Dimenhydrinate Dimetindene Diphenhydramine Diphenylpyraline Doxylamine Embramine Etodroxizine Etybenzatropine (ethylbenztropine) Etymemazine Fenethazine Flunarizine Histapyrrodine Homochlorcyclizine Hydroxyethylpromethazine Hydroxyzine Isopromethazine Isothipendyl Meclozine Medrylamine Mepyramine (pyrilamine) Mequitazine Methafurylene Methapyrilene Methdilazine Moxastine Orphenadrine Oxatomide Oxomemazine Phenindamine Pheniramine Phenyltoloxamine Pimethixene Piperoxan Pipoxizine Promethazine Propiomazine Pyrrobutamine Talastine Thenalidine Thenyldiamine Thiazinamium Thonzylamine Tolpropamine Tripelennamine Triprolidine Second/third-generation: Acrivastine Alinastine Astemizole Azelastine Bamirastine Barmastine Bepiastine Bepotastine Bilastine Cabastinen Carebastine Cetirizine Clemastine Clemizole Clobenztropine Desloratadine Dorastine Ebastine Efletirizine Emedastine Epinastine Fexofenadine Flezelastine Ketotifen Latrepirdine Levocabastine Levocetirizine Linetastine Loratadine Mapinastine Mebhydrolin Mizolastine Moxastine Noberastine Octastine Olopatadine Perastine Pibaxizine Piclopastine Quifenadine (phencarol) Rocastine Rupatadine Setastine Sequifenadine (bicarphen) Talastine Temelastine Terfenadine Vapitadine Zepastine Non-generational: Atypical antipsychotics (e.g., aripiprazole, asenapine, brexpiprazole, clozapine, iloperidone, olanzapine, paliperidone, quetiapine, risperidone, RP-5063, ziprasidone, zotepine) Tetracyclic antidepressants (e.g., amoxapine, loxapine, maprotiline, mianserin, mirtazapine, oxaprotiline) Tricyclic antidepressants (e.g., amitriptyline, butriptyline, clomipramine, desipramine, dosulepin (dothiepin), doxepin, imipramine, iprindole, lofepramine, nortriptyline, protriptyline, trimipramine) Typical antipsychotics (e.g., chlorpromazine, flupenthixol, fluphenazine, loxapine, perphenazine, prochlorperazine, thioridazine, thiothixene) Unknown/unsorted: Belarizine Elbanizine Flotrenizine Napactadine Tagorizine Trelnarizine Trenizine
H₂	Agonists: Amthamine Betazole Dimaprit Histamine HTMT Impromidine L-Histidine UR-AK49 Antagonists: Bisfentidine Burimamide Cimetidine Dalcotidine Donetidine Ebrotidine Etintidine Famotidine Isolamtidine Lafutidine Lamtidine Lavoltidine (loxtidine) Lupitidine Metiamide Mifentidine Niperotidine Nizatidine Osutidine Oxmetidine Pibutidine Quisultazine (quisultidine) Ramixotidine Ranitidine Roxatidine Sufotidine Tiotidine Tuvatidine Venritidine Xaltidine Zolantidine
H₃	Agonists: α-Methylhistamine Cipralisant Histamine Imetit Immepip Immethridine L-Histidine Methimepip Proxyfan Antagonists: A-349,821 A-423,579 ABT-239 ABT-652 AZD5213 Betahistine Burimamide Ciproxifan Clobenpropit Conessine Enerisant GSK-189,254 Impentamine Iodophenpropit Irdabisant JNJ-5207852 MK-0249 NNC 38-1049 PF-03654746 Pitolisant SCH-79687 Thioperamide VUF-5681
H₄	Agonists: 4-Methylhistamine α-Methylhistamine Histamine L-Histidine OUP-16 VUF-8430 Antagonists: JNJ-7777120 Mianserin Thioperamide Toreforant VUF-6002
See also: Receptor/signaling modulators • Monoamine metabolism modulators • Monoamine reuptake and release modulators

Tricyclics
Classes	Acridine Anthracene Dibenzazepine Dibenzocycloheptene Dibenzodiazepine Dibenzothiazepine Dibenzothiepin Dibenzoxazepine Dibenzoxepin Phenothiazine Pyridazinobenzoxazine Pyridinobenzodiazepine Thioxanthene
Antidepressants (TCAs and TeCAs)	7-OH-Amoxapine Amezepine Amineptine Amitriptyline Amitriptylinoxide Amoxapine Aptazapine Azepindole Azipramine Batelapine Butriptyline Cianopramine Ciclazindol Ciclopramine Cidoxepin Clomipramine Cotriptyline Cyanodothiepin Demexiptiline Depramine (balipramine) Desipramine (desmethylimipramine) Desmethylclomipramine Desmethyltrimipramine Dibenzepin Dimetacrine Dosulepin (dothiepin) Doxepin Enprazepine Esmirtazapine Fantridone Fluotracen Hepzidine Homopipramol Imipramine Imipraminoxide Intriptyline Iprindole Ketipramine Litracen Lofepramine Losindole Loxapine Maprotiline Mariptiline Mazindol Melitracen Metapramine Mezepine Mianserin Mirtazapine Monometacrine Naranol Nitroxazepine Norbutriptyline Nordoxepin Northiaden (nordosulepin) Nortriptyline (noramitriptyline) Noxiptiline Octriptyline Opipramol Oxaprotiline Pipofezine Pirandamine Propizepine Protriptyline Quinupramine Setiptiline (teciptiline) Spiroxepin Tandamine Tampramine Tianeptine Tienopramine Trimipramine
Antihistamines	Azatadine Clobenzepam Cyproheptadine Dacemazine Deptropine Desloratadine Epinastine Etymemazine Fenethazine Hydroxyethylpromethazine Isopromethazine Isothipendyl Ketotifen Latrepirdine Loratadine Mebhydrolin Mequitazine Methdilazine Olopatadine Oxomemazine Phenindamine Pimethixene Promethazine Propiomazine Rupatadine Thiazinamium
Antipsychotics	Acetophenazine Alimemazine Amoxapine Asenapine Butaclamol Butaperazine Carfenazine (carphenazine) Carpipramine Chlorpromazine Chlorprothixene Ciclindole Citatepine Clocapramine Clomacran Clorotepine Clotiapine Clozapine Cyanothepin Doclothepin Docloxythepin Erizepine Flucindole Flumezapine Fluotracen Flupentixol Fluphenazine Gevotroline Homopipramol Isofloxythepin Levomepromazine/Methotrimeprazine Loxapine Maroxepin Meperathiepin Mesoridazine Metiapine Metitepine Metoxepin Mosapramine Naranol Octomethothepin Olanzapine Oxyclothepin Oxyprothepin Pentiapine Peradithiepin Perathiepin Perazine Perphenazine Periciazine Pinoxepin Piperacetazine Pipotiazine Piquindone Prochlorperazine Promazine Prothipendyl Quetiapine Savoxepin/Cipazoxapine Sulforidazine Tenilapine Thiethylperazine Thiopropazate Thioridazine Thiothixene Tilozepine Traboxopine Trifluoperazine Triflupromazine Trifluthepin Zotepine Zuclopenthixol
Anticonvulsants	Carbamazepine Dizocilpine Eslicarbazepine Eslicarbazepine acetate Etazepine Licarbazepine Oxcarbazepine Oxitriptyline Rispenzepine
Others	Adosopine Aminopromazine Atiprosin Beloxepin Benzoctamine Carvedilol Cidoxepin Cyclobenzaprine Damotepine Darenzepine Elanzepine Fluradoline Methylene blue Monatepil Nuvenzepine Oxetorone Perlapine P7C3 Pinadoline Pirenzepine Pirolate Pitrazepin Pizotifen Profenamine Serazapine Siltenzepine Telenzepine Tipindole Tropatepine Zolenzepine

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