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Details

Stereochemistry ABSOLUTE
Molecular Formula C17H19N3.ClH
Molecular Weight 301.814
Optical Activity UNSPECIFIED
Defined Stereocenters 1 / 1
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of ESMIRTAZAPINE HYDROCHLORIDE

SMILES

Cl.CN1CCN2[C@H](C1)C3=CC=CC=C3CC4=CC=CN=C24

InChI

InChIKey=SISMRXGXKXMBKT-PKLMIRHRSA-N
InChI=1S/C17H19N3.ClH/c1-19-9-10-20-16(12-19)15-7-3-2-5-13(15)11-14-6-4-8-18-17(14)20;/h2-8,16H,9-12H2,1H3;1H/t16-;/m1./s1

HIDE SMILES / InChI

Molecular Formula ClH
Molecular Weight 36.461
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula C17H19N3
Molecular Weight 265.3529
Charge 0
Count
Stereochemistry ABSOLUTE
Additional Stereochemistry No
Defined Stereocenters 1 / 1
E/Z Centers 0
Optical Activity UNSPECIFIED

Esmirtazapine (S-(+)mirtazapine or ORG-50081) is an enantiomer of mirtazapine (REMERON®), a high-affinity antagonist at 5-HT2/5-HT3 and H1 receptors, used in the treatment of depression. Esmirtazapine has a shorter plasma half-life than the R(−) enantiomer. Esmirtazapine is preferentially metabolized into an 8-hydroxy glucuronide. Organon was developing esmirtazapine for the treatment of hot flushes (vasomotor symptoms) associated with the menopause and insomnia.

Approval Year

PubMed

PubMed

TitleDatePubMed
Treating age-related changes in somatotrophic hormones, sleep, and cognition.
2001 Sep
Pathophysiology of depression and mechanisms of treatment.
2002 Mar
Behavioral disturbances in dementia.
2003 Mar
Repeated treatment with mirtazepine induces brain-derived neurotrophic factor gene expression in rats.
2005 Dec
Onset of improvement and response to mirtazapine in depression: a multicenter naturalistic study of 4771 patients.
2005 Mar
[Compliance in psychiatry: results of a survey of depressed patients using orally disintegrating tablet].
2006
Pharmacological treatment of primary negative symptoms in schizophrenia: a systematic review.
2006 Dec
Improvement in cognitive and psychosocial functioning and self image among adolescent inpatient suicide attempters.
2006 Dec 29
Prophylaxis of migraine.
2006 Sep
Family history, early adversity and the hypothalamic-pituitary-adrenal (HPA) axis: Mediation of the vulnerability to mood disorders.
2007
[Differentiated approach to the therapy of endogenous anxious depression].
2007
[Depressive disturbances during antiviral therapy in patients with type C hepatitis].
2007
Post-traumatic stress disorder.
2007 Aug 1
A survey of combination antidepressant use in Australia.
2007 Feb
In silico prediction of pregnane X receptor activators by machine learning approaches.
2007 Jan
"Add-On"-therapy with an individualized preparation consisting of free amino acids for patients with a major depression.
2007 Jun
Essential tremor.
2007 May 1
Treatment of depression as part of end-of-life care.
2008
Toward achieving optimal response: understanding and managing antidepressant side effects.
2008
5-HT(2A) inverse-agonists for the treatment of insomnia.
2008
Triple reuptake inhibitors: the next generation of antidepressants.
2008 Dec
Pharmacological management of panic disorder.
2008 Feb
Outcomes after isolated mirtazapine (Remeron) supratherapeutic ingestions.
2008 Jan
A postmenopausal woman presenting with Ekbom syndrome associated with recurrent depressive disorder: a case report.
2008 Jul 22
Neuropharmacology.
2008 Oct
Triple reuptake inhibitors: a premise and promise.
2008 Sep
Routing protocols in wireless sensor networks.
2009
A new paradigm for the prediction of antidepressant treatment response.
2009
Brain-derived neurotrophic factor: role in depression and suicide.
2009
Psychopharmacology of ADHD in pediatrics: current advances and issues.
2009
Mirtazapine: a review of its use in major depression and other psychiatric disorders.
2009
Incidence of major malformations in infants following antidepressant exposure in pregnancy: results of a large prospective cohort study.
2009 Apr
Brain potentials of conflict and error-likelihood following errorful and errorless learning in obsessive-compulsive disorder.
2009 Aug 12
Early presentation following overdose of modified-release paracetamol (Panadol Osteo) with biphasic and prolonged paracetamol absorption.
2009 Aug 7
Ethyl carbamate in alcoholic beverages from Mexico (tequila, mezcal, bacanora, sotol) and Guatemala (cuxa): market survey and risk assessment.
2009 Jan
Management of difficult urticaria.
2009 Jul
Treatment with selective serotonin reuptake inhibitors and mirtapazine results in differential brain activation by visual erotic stimuli in patients with major depressive disorder.
2009 Jun
Undertreatment of menopausal symptoms and novel options for comprehensive management.
2009 Nov
Algorithms for the assessment and management of insomnia in primary care.
2009 Nov 3
Fibromyalgia and myofascial pain syndrome-a dilemma.
2009 Oct
Sexual side-effects of contemporary antidepressants: review.
2009 Sep
Extreme thermal sensitivity and pain-induced sensitization in a fibromyalgia patient.
2010
Comorbidities of migraine.
2010
Local smoke-free policy development in Santa Fe, Argentina.
2010 Apr
3D-QSAR design of new escitalopram derivatives for the treatment of major depressive disorders.
2010 Apr-Jun
Cancer cachexia: traditional therapies and novel molecular mechanism-based approaches to treatment.
2010 Dec
Gene expression profiling in whole blood identifies distinct biological pathways associated with obesity.
2010 Dec 1
Mania associated with mirtazepine treatment and mixed depression.
2010 Jan
Behavioral and developmental changes in rats with prenatal exposure of mirtazapine.
2010 Jul-Sep
QEEG Measures in Huntington's Disease: A Pilot Study.
2010 Oct 25
Patents

Sample Use Guides

Phase III trials: 0.5-18 mg once daily for 1-52 weeks
Route of Administration: Oral
Substance Class Chemical
Created
by admin
on Mon Mar 31 22:12:07 GMT 2025
Edited
by admin
on Mon Mar 31 22:12:07 GMT 2025
Record UNII
J12BQ47O1N
Record Status Validated (UNII)
Record Version
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Name Type Language
ESMIRTAZAPINE HYDROCHLORIDE
Common Name English
(S)-(+)-MIRTAZAPINE MONOHYDROCHLORIDE
Preferred Name English
MIRTAZAPINE HYDROCHLORIDE, (S)-
Common Name English
PYRAZINO(2,1-A)PYRIDO(2,3-C)(2)BENZAZEPINE, 1,2,3,4,10,14B-HEXAHYDRO-2-METHYL-, HYDROCHLORIDE (1:1), (14BS)-
Systematic Name English
Code System Code Type Description
PUBCHEM
71576069
Created by admin on Mon Mar 31 22:12:07 GMT 2025 , Edited by admin on Mon Mar 31 22:12:07 GMT 2025
PRIMARY
CAS
1448014-35-4
Created by admin on Mon Mar 31 22:12:07 GMT 2025 , Edited by admin on Mon Mar 31 22:12:07 GMT 2025
PRIMARY
FDA UNII
J12BQ47O1N
Created by admin on Mon Mar 31 22:12:07 GMT 2025 , Edited by admin on Mon Mar 31 22:12:07 GMT 2025
PRIMARY
DRUG BANK
DBSALT002352
Created by admin on Mon Mar 31 22:12:07 GMT 2025 , Edited by admin on Mon Mar 31 22:12:07 GMT 2025
PRIMARY
Related Record Type Details
PARENT -> SALT/SOLVATE
RACEMATE -> ENANTIOMER