Gepirone

Gepirone
Systematic (IUPAC) name

4,4-Dimethyl-1-[4-(4-pyrimidin-2-ylpiperazin-1-yl)butyl]piperidine-2,6-dione
Clinical data
Routes of administration	Oral
Pharmacokinetic data
Biological half-life	2-3 hours
Identifiers
CAS Number	83928-76-1
ATC code	N06AX19 (WHO)
PubChem	CID 55191
ChemSpider	49836^Y
UNII	JW5Y7B8Z18^Y
ChEMBL	CHEMBL284092^Y
Chemical data
Formula	C₁₉H₂₉N₅O₂
Molar mass	359.46586 g/mol
SMILES O=C1N(C(=O)CC(C)(C)C1)CCCCN3CCN(c2ncccn2)CC3
InChI InChI=1S/C19H29N5O2/c1-19(2)14-16(25)24(17(26)15-19)9-4-3-8-22-10-12-23(13-11-22)18-20-6-5-7-21-18/h5-7H,3-4,8-15H2,1-2H3^Y Key:QOIGKGMMAGJZNZ-UHFFFAOYSA-N^Y
(verify)

Gepirone (INN) (developmental code names BMY-13805, MJ-13805, ORG-13011, TGFK07AD; proposed brand names Ariza, Variza) or gepirone hydrochloride (USAN) is an antidepressant and anxiolytic drug of the azapirone group that has never been marketed. Like other azapirones, it acts as a selective partial agonist of the 5-HT_1A receptor. Gepirone was under development in the U.S. in an extended release form, but despite completing phase III clinical trials, it failed to pass the drug approval process. As a result, gepirone, despite already having brand names chosen, did not manage to reach the pharmaceutical market.

Gepirone was originally developed by Bristol-Myers Squibb, but was out-licensed to Fabre-Kramer in 1993. The U.S. Food and Drug Administration (FDA) rejected approval for gepirone in 2004. It was submitted for the preregistration (NDA) phase again in May 2007 after adding additional information from clinical trials as the FDA required in 2004. However, in 2007 it once again failed to convince the FDA of its qualities for treating anxiety and depression. In December 2015, the FDA once again gave gepirone a negative review for depression due to concerns of efficacy.

References

Antidepressants (N06A)

Specific reuptake inhibitors and/or receptor modulators

SSRIs	Citalopram Escitalopram Fluoxetine^# Fluvoxamine Indalpine^‡ Paroxetine Sertraline Zimelidine^‡

SNRIs	Desvenlafaxine Duloxetine Levomilnacipran Milnacipran Tofenacin Venlafaxine

NRIs	Atomoxetine Reboxetine Viloxazine

NDRIs	Amineptine^‡ Nomifensine^‡

SARIs	Etoperidone Nefazodone^‡ Trazodone

SMSs	Vilazodone Vortioxetine

Others	Agomelatine Amisulpride Amitriptyline/perphenazine Buprenorphine Bupropion Etryptamine^‡ Flupentixol/melitracen Esketamine Ketamine Indeloxazine Lurasidone Medifoxamine^‡ Metryptamine^‡ Olanzapine/fluoxetine Oxaflozane^‡ Quetiapine Tandospirone Teniloxazine Tianeptine Tranylcypromine/trifluoperazine

Tricyclic and tetracyclic antidepressants

TCAs	Amineptine^‡ Amitriptyline^# Amitriptylinoxide Butriptyline^‡ Clomipramine^# Demexiptiline^‡ Desipramine Dibenzepin Dimetacrine^‡ Dosulepin Doxepin Imipramine Imipraminoxide^‡ Iprindole^‡ Lofepramine Melitracen Metapramine^‡ Nitroxazepine Nortriptyline Noxiptiline Opipramol Pipofezine Propizepine^‡ Protriptyline Quinupramine^‡ Tianeptine Trimipramine

TeCAs	Amoxapine Maprotiline Mianserin Mirtazapine Setiptiline

Others	Tiazesim

Monoamine oxidase inhibitors

Non-selective	Irreversible: Benmoxin^‡ Iproclozide^‡ Iproniazid^‡ Isocarboxazid Mebanazine^‡ Nialamide^‡ Octamoxin^‡ Phenelzine Pheniprazine^‡ Phenoxypropazine^‡ Pivhydrazine^‡ Safrazine^‡ Tranylcypromine Reversible: Caroxazone^‡

MAO_A-selective	Reversible: Bifemelane Eprobemide Metralindole Minaprine^‡ Moclobemide Pirlindole Tetrindole Toloxatone

MAO_B-Selective	Irreversible: Selegiline

Adjunctive therapies

Atypical antipsychotics (aripiprazole, lurasidone, olanzapine, quetiapine) Buspirone Lithium (lithium carbonate, lithium citrate) Thyroid hormones (triiodothyronine (T₃), levothyroxine (T₄))

Miscellaneous

Ademetionine (SAMe) Hypericum perforatum (St. John's Wort) Oxitriptan (5-HTP) Tryptophan

^#WHO-EM
^‡Withdrawn from market
Clinical trials:
- ^†Phase III
- ^§Never to phase III

Anxiolytics (N05B)

5-HT_1A agonists	Buspirone Tandospirone

GABA_AR PAMs	Benzodiazepines: Adinazolam Alprazolam Bromazepam Camazepam Chlordiazepoxide Clobazam Clonazepam Clorazepate Clotiazepam Cloxazolam Diazepam^# Ethyl loflazepate Etizolam Fludiazepam Halazepam Ketazolam Lorazepam^# Medazepam Nordazepam Oxazepam Pinazepam Prazepam Others: Alpidem^‡ Barbiturates Carbamates Chlormezanone^‡ Ethanol Etifoxine; Herbs: Kava Skullcap Valerian

α₂δ VDCC blockers	Gabapentin Gabapentin enacarbil Phenibut Pregabalin

Antidepressants	SSRIs SNRIs SARIs TCAs TeCAs MAOIs; Others: Agomelatine Bupropion Vilazodone Vortioxetine

Sympatholytics	Beta blockers Clonidine Guanfacine Prazosin

Others	Benzoctamine Cannabidiol Cycloserine Fabomotizole Hydroxyzine Kanna Lavender Lorpiprazole Mebicar Mepiprazole Nicotine Opipramol Oxaflozane^‡ Phenaglycodol Phenibut Picamilon Selank Tenoten Tiagabine Tofisopam Validolum

Adrenergics

Receptor ligands

α₁

Agonists 6-FNE Amidephrine Anisodine Buspirone Cirazoline Corbadrine Dipivefrine Dopamine Ephedrine Epinephrine Etilefrine Ethylnorepinephrine Indanidine Metaraminol Methoxamine Methyldopa Midodrine Naphazoline Norepinephrine Octopamine (drug) Oxymetazoline Phenylephrine Phenylpropanolamine Pseudoephedrine Synephrine Tetrahydrozoline Tiamenidine Xylometazoline

Antagonists Abanoquil Adimolol Ajmalicine Alfuzosin Amosulalol Anisodamine Arotinolol Atiprosin Atypical antipsychotics (e.g., clozapine, olanzapine, quetiapine, risperidone) Benoxathian Buflomedil Bunazosin Carvedilol Corynanthine Dapiprazole Domesticine Doxazosin Ergolines (e.g., ergotamine, dihydroergotamine, lisuride, terguride) Etoperidone Eugenodilol Fenspiride Hydroxyzine Indoramin Ketanserin L-765,314 Labetalol mCPP Mepiprazole Metazosin Monatepil Moxisylyte Naftopidil Nantenine Nefazodone Neldazosin Niaprazine Nicergoline Niguldipine Pardoprunox Pelanserin Phendioxan Phenoxybenzamine Phentolamine Piperoxan Prazosin Quinazosin Ritanserin Silodosin Spiperone Talipexole Tamsulosin Terazosin Tiodazosin Tolazoline Trazodone Tetracyclic antidepressants (e.g., amoxapine, maprotiline, mianserin) Tricyclic antidepressants (e.g., amitriptyline, clomipramine, doxepin, imipramine, trimipramine) Trimazosin Typical antipsychotics (e.g., chlorpromazine, fluphenazine, loxapine, thioridazine) Urapidil WB-4101 Zolertine

α₂

Agonists (R)-3-Nitrobiphenyline 4-NEMD 6-FNE Amitraz Apraclonidine Brimonidine Cannabivarin Clonidine Corbadrine Detomidine Dexmedetomidine Dihydroergotamine Dipivefrine Dopamine Ephedrine Ergotamine Epinephrine Etilefrine Ethylnorepinephrine Guanabenz Guanfacine Guanoxabenz Lofexidine Medetomidine Methamphetamine Methyldopa Mivazerol Naphazoline Norepinephrine Oxymetazoline Phenylpropanolamine Piperoxan Pseudoephedrine Rilmenidine Romifidine Talipexole Tetrahydrozoline Tiamenidine Tizanidine Tolonidine Urapidil Xylazine Xylometazoline

Antagonists 1-PP Adimolol Aptazapine Atipamezole Atypical antipsychotics (e.g., asenapine, clozapine, lurasidone, paliperidone, quetiapine, risperidone, zotepine) Azapirones (e.g., buspirone, tandospirone) BRL-44408 Buflomedil Cirazoline Efaroxan Esmirtazapine Fenmetozole Fluparoxan Idazoxan mCPP Mianserin Mirtazapine NAN-190 Olanzapine Pardoprunox Phentolamine Phenoxybenzamine Piperoxan Piribedil Rauwolscine Rotigotine SB-269970 Setiptiline Spiroxatrine Sunepitron Tolazoline Typical antipsychotics (e.g., chlorpromazine, fluphenazine, loxapine, thioridazine) Yohimbine

Agonists Abediterol Amibegron Arbutamine Arformoterol Arotinolol BAAM Bambuterol Befunolol Bitolterol Broxaterol Buphenine Carbuterol Carmoterol Cimaterol Clenbuterol Corbadrine Denopamine Dipivefrine Dobutamine Dopamine Dopexamine Ephedrine Epinephrine Etafedrine Etilefrine Ethylnorepinephrine Fenoterol Formoterol Hexoprenaline Higenamine Indacaterol Isoetarine Isoprenaline Isoxsuprine Levosalbutamol Mabuterol Methoxyphenamine Methyldopa Mirabegron Norepinephrine Orciprenaline Oxyfedrine Phenylpropanolamine Pirbuterol Prenalterol Ractopamine Procaterol Pseudoephedrine Reproterol Rimiterol Ritodrine Salbutamol Salmeterol Solabegron Terbutaline Tretoquinol Tulobuterol Vilanterol Xamoterol Zilpaterol Zinterol

Antagonists Acebutolol Adaprolol Adimolol Afurolol Alprenolol Alprenoxime Amosulalol Ancarolol Arnolol Arotinolol Atenolol Befunolol Betaxolol Bevantolol Bisoprolol Bopindolol Bornaprolol Brefonalol Bucindolol Bucumolol Bufetolol Bufuralol Bunitrolol Bunolol Bupranolol Butaxamine Butidrine Butofilolol Capsinolol Carazolol Carpindolol Carteolol Carvedilol Celiprolol Cetamolol Cicloprolol Cinamolol Cloranolol Cyanopindolol Dalbraminol Dexpropranolol Diacetolol Dichloroisoprenaline Dihydroalprenolol Dilevalol Diprafenone Draquinolol Ecastolol Epanolol Ericolol Ersentilide Esatenolol Esprolol Eugenodilol Exaprolol Falintolol Flestolol Flusoxolol Hydroxycarteolol Hydroxytertatolol ICI-118,551 Idropranolol Indenolol Indopanolol Iodocyanopindolol Iprocrolol Isoxaprolol Isamoltane Labetalol Landiolol Levobetaxolol Levobunolol Levomoprolol Medroxalol Mepindolol Metipranolol Metoprolol Moprolol Nadolol Nadoxolol Nebivolol Nifenalol Nipradilol Oxprenolol Pacrinolol Pafenolol Pamatolol Pargolol Penbutolol Pindolol Practolol Primidolol Procinolol Pronethalol Propafenone Propranolol Ridazolol Ronactolol Soquinolol Sotalol Spirendolol SR 59230A Sulfinalol Talinolol Tazolol Tertatolol Tienoxolol Tilisolol Timolol Tiprenolol Tolamolol Toliprolol Xibenolol Xipranolol

Reuptake inhibitors

NET

Selective norepinephrine reuptake inhibitors Amedalin Atomoxetine (tomoxetine) Ciclazindol Daledalin Edivoxetine Esreboxetine Lortalamine Mazindol Nisoxetine Reboxetine Talopram Talsupram Tandamine Viloxazine

Norepinephrine-dopamine reuptake inhibitors Amineptine Bupropion Fencamine Fencamfamine Hydroxybupropion Lefetamine Levophacetoperane LR-5182 Manifaxine Methylphenidate Nomifensine O-2172 Radafaxine

Serotonin-norepinephrine reuptake inhibitors Bicifadine BTS-54505 Desvenlafaxine Duloxetine Eclanamine Levomilnacipran McN-5652 Milnacipran N-Methyl-PPPA PPPA Sibutramine Venlafaxine WY-45233

Serotonin-norepinephrine-dopamine reuptake inhibitors (S)-Duloxetine 3,3-Diphenylcyclobutanamine Amifitadine Ansofaxine Bicifadine Brasofensine Centanafadine Cocaine Dasotraline Desmethylsertraline Diclofensine DOV-102677 DOV-216303 EXP-561 Fezolamine HDMP-28 Indatraline JNJ-7925476 JZ-IV-10 Liafensine Mazindol Naphyrone Nefazodone Nefopam NS-2359 Perafensine PRC200 SEP-228431 SEP-228432 Tedatioxetine Tesofensine

Tricyclic antidepressants Amitriptyline Butriptyline Cianopramine Clomipramine Desipramine Dosulepin Doxepin Imipramine Lofepramine Melitracen Nortriptyline Protriptyline Trimipramine

Tetracyclic antidepressants Amoxapine Maprotiline Mianserin Oxaprotiline Setiptiline

Others Antihistamines (e.g., brompheniramine, chlorphenamine, pheniramine, tripelennamine) Arylcyclohexylamines (e.g., ketamine, phencyclidine) CP-39,332 EXP-561 Fezolamine Ginkgo biloba Indeloxazine Loxapine Nefazodone Nefopam Opioids (e.g., methadone, pethidine (meperidine), tapentadol, tramadol, levorphanol) Pridefine Tedatioxetine Teniloxazine Tofenacin Tropanes (e.g., cocaine) Ziprasidone

VMATs

Amiodarone
Amphetamines (e.g., amphetamine, methamphetamine, MDMA)
Bietaserpine
Deserpidine
Efavirenz
GBR-12935
Ibogaine
Ketanserin
Lobeline
Reserpine
Rose bengal
Tetrabenazine
Vanoxerine (GBR-12909)

Releasing agents

Morpholines Fenbutrazate Fenmetramide Morazone Morforex Phendimetrazine Phenmetrazine Pseudophenmetrazine

Oxazolines 4-MAR Aminorex Clominorex Cyclazodone Fenozolone Fluminorex Pemoline Thozalinone

Phenethylamines (also amphetamines, cathinones, etc) 2-OH-PEA 4-CAB 4-FA 4-FMA 4-MA 4-MMA Alfetamine Amfecloral Amfepentorex Amfepramone Amphetamine Dextroamphetamine Levoamphetamine Amphetaminil β-Me-PEA BDB Benzphetamine BOH Buphedrone Bupropion Butylone Cathine Cathinone Clobenzorex Clortermine Dimethylamphetamine DMA DMMA EBDB Ephedrine Ethcathinone Ethylone Etilamfetamine Famprofazone Fenethylline Fenproporex Flephedrone Fludorex Furfenorex Hordenine 4-Hydroxyamphetamine 5-APDI (IAP) 5-MAPDI (IMP) Iofetamine (123I) Lisdexamfetamine Lophophine MBDB MDA MDEA MDMA Metamfepramone MDMPEA MDOH MDPEA Mefenorex Mephedrone Mephentermine Methamphetamine Dextromethamphetamine Levomethamphetamine Methcathinone Methedrone Methylone Morforex Naphthylaminopropane Ortetamine pBA pCA Pentorex Phenethylamine Pholedrine Phenpromethamine Phentermine Phenylpropanolamine pIA Prenylamine Propylamphetamine Pseudoephedrine Selegiline (also D-Deprenyl) Tiflorex Tyramine Xylopropamine Zylofuramine

Piperazines 2C-B-BZP BZP MBZP mCPP MDBZP MeOPP pFPP

Others 2-ADN 2-AI 2-AT 2-BP 4-BP 5-IAI Clofenciclan Cyclopentamine Cypenamine Cyprodenate Feprosidnine Gilutensin Heptaminol Hexacyclonate Indanorex Isometheptene Methylhexanamine Octodrine Phthalimidopropiophenone Propylhexedrine (Levopropylhexedrine) Tuaminoheptane

Enzyme inhibitors

PAH

3,4-Dihydroxystyrene

AAAD

DBH

PNMT

CGS-19281A
SKF-64139
SKF-7698

MAO

Nonselective Benmoxin Caroxazone Echinopsidine Furazolidone Hydralazine Indantadol Iproclozide Iproniazid Isocarboxazid Isoniazid Linezolid Mebanazine Metfendrazine Nialamide Octamoxin Paraxazone Phenelzine Pheniprazine Phenoxypropazine Pivhydrazine Procarbazine Safrazine Tranylcypromine

MAO-A selective Amiflamine Bazinaprine Befloxatone Brofaromine Cimoxatone Clorgiline CX157 (Tyrima) Eprobemide Esuprone Harmala alkaloids Harmine Harmaline Tetrahydroharmine Harman Methylene blue Metralindole Minaprine Moclobemide Pirlindole Sercloremine Tetrindole Toloxatone

MAO-B selective Ladostigil Lazabemide Milacemide Mofegiline Pargyline Rasagiline Safinamide Selegiline (also D-Deprenyl)

Others

L-Phenylalanine → L-Tyrosine → L-DOPA (Levodopa) → Dopamine
L-DOPS (Droxidopa)

Cofactors

Ferrous Iron (Fe²⁺)
S-Adenosyl-L-Methionine
Vitamin B₃ (Niacin
Nicotinamide → NADPH)
Vitamin B₆ (Pyridoxine
Pyridoxamine
Pyridoxal → Pyridoxal Phosphate)
Vitamin B₉ (Folic acid → Tetrahydrofolic acid)
Vitamin C (Ascorbic acid)
Zinc (Zn²⁺)

Neurotoxins

Others

Activity enhancers BPAP PPAP

Release blockers Bethanidine Bretylium Guanadrel Guanazodine Guanethidine Guanoxan

See also:: Dopaminergics; Melatonergics; Serotonergics; List of adrenergic drugs

Serotonergics

5-HT₁ receptor ligands

5-HT_1A

Agonists: 8-OH-DPAT Adatanserin Amphetamine Antidepressants (e.g., etoperidone, nefazodone, trazodone, vilazodone, vortioxetine) Atypical antipsychotics (e.g., aripiprazole, asenapine, clozapine, lurasidone, quetiapine, ziprasidone) Azapirones (e.g., buspirone, eptapirone, gepirone, perospirone, tandospirone) Bay R 1531 Befiradol BMY-14802 Cannabidiol Dimemebfe Dopamine Ebalzotan Eltoprazine Ergolines (e.g., bromocriptine, cabergoline, dihydroergotamine, ergotamine, lisuride, LSD, methylergometrine (methylergonovine), methysergide, pergolide) F-11461 F-12826 F-13714 F-14679 F-15063 F-15599 Flesinoxan Flibanserin Flumexadol Lesopitron LY-293284 LY-301317 mCPP MKC-242 Naluzotan NBUMP Osemozotan Oxaflozane Pardoprunox Piclozotan Rauwolscine Repinotan Roxindole RU-24969 S-14506 S-14671 S-15535 Sarizotan Serotonin (5-HT) SSR-181507 Sunepitron Tryptamines (e.g., 5-CT, 5-MeO-DMT, 5-MT, bufotenin, DMT, indorenate, N-Me-5-HT, psilocin, psilocybin) TGBA01AD U-92016A Urapidil Vilazodone Xaliproden Yohimbine

Antagonists: Atypical antipsychotics (e.g., iloperidone, risperidone, sertindole) AV965 Beta blockers (e.g., alprenolol, cyanopindolol, iodocyanopindolol, oxprenolol, pindobind, pindolol, propranolol, tertatolol) BMY-7378 CSP-2503 Dotarizine Ergolines (e.g., metergoline) Flopropione GR-46611 Isamoltane Lecozotan Mefway Metitepine (methiothepin) MIN-117 (WF-516) MPPF NAN-190 Robalzotan S-15535 SB-649915 SDZ 216-525 Spiperone Spiramide Spiroxatrine UH-301 WAY-100135 WAY-100635 Xylamidine

Unknown/unsorted: Ergolines (e.g., ergometrine (ergonovine))

5-HT_1B

Agonists: CGS-12066A CP-93129 CP-94253 CP-122,288 CP-135807 Eltoprazine Ergolines (e.g., bromocriptine, dihydroergotamine, ergotamine, methylergometrine (methylergonovine), methysergide, pergolide) mCPP RU-24969 Serotonin (5-HT) Triptans (e.g., avitriptan, donitriptan, eletriptan, sumatriptan, zolmitriptan) TFMPP Tryptamines (e.g., 5-BT, 5-CT, 5-MT, DMT) Vortioxetine

Antagonists: AR-A000002 Elzasonan Ergolines (e.g., metergoline) GR-127935 Isamoltane LY-393558 Metitepine (methiothepin) SB-216641 SB-224289 SB-236057 Yohimbine

Unknown/unsorted: Ergolines (e.g., cabergoline, ergometrine (ergonovine), lisuride)

5-HT_1D

Agonists: CP-122,288 CP-135807 CP-286601 Ergolines (e.g., bromocriptine, cabergoline, dihydroergotamine, ergotamine, LSD, methysergide) GR-46611 L-694247 L-772405 mCPP PNU-109291 PNU-142633 Serotonin (5-HT) TGBA01AD Triptans (e.g., almotriptan, avitriptan, donitriptan, eletriptan, frovatriptan, naratriptan, rizatriptan, sumatriptan, zolmitriptan) Tryptamines (e.g., 5-BT, 5-CT, 5-Et-DMT, 5-MT, 5-(nonyloxy)tryptamine, DMT)

Antagonists: Alniditan BRL-15572 Elzasonan Ergolines (e.g., metergoline) GR-127935 Ketanserin LY-310762 LY-367642 LY-393558 LY-456219 LY-456220 Metitepine (methiothepin) Mianserin Ritanserin Yohimbine Ziprasidone

Unknown/unsorted: Ergolines (e.g., lisuride, lysergol, pergolide)

5-HT_1E

Agonists: BRL-54443 Ergolines (e.g., methysergide) Serotonin (5-HT) Triptans (e.g., eletriptan) Tryptamines (e.g., tryptamine)

Antagonists: Metitepine (methiothepin)

Unknown/unsorted: Ergolines (e.g., ergometrine (ergonovine), lysergol, methylergometrine (methylergonovine)

5-HT_1F

Agonists: BRL-54443 CP-122,288 Ergolines (e.g., bromocriptine, lysergol, methylergometrine (methylergonovine) methysergide) Lasmiditan LY-334370 Serotonin (5-HT) Triptans (e.g., eletriptan, naratriptan, sumatriptan) Tryptamines (e.g., 5-MT)

Antagonists: Mianserin Metitepine (methiothepin)

5-HT₂ receptor ligands

5-HT_2A

Agonists: 25H/NB series (e.g., 25I-NBF, 25I-NBMD, 25I-NBOH, 25I-NBOMe, 25B-NBOMe, 25C-NBOMe, 25TFM-NBOMe, 2CBCB-NBOMe, 25CN-NBOH, 2CBFly-NBOMe) 2Cs (e.g., 2C-B, 2C-E, 2C-I, 2C-T-2, 2C-T-7, 2C-T-21) 2C-B-FLY 2CB-Ind 5-Methoxytryptamines (5-MeO-DET, 5-MeO-DiPT, 5-MeO-DMT, 5-MeO-DPT, 5-MT) α-Alkyltryptamines (e.g., 5-Cl-αMT, 5-Fl-αMT, 5-MeO-αET, 5-MeO-αMT, α-Me-5-HT, αET, αMT) AL-34662 AL-37350A Bromo-DragonFLY Dimemebfe DMBMPP DOx (e.g., DOB, DOC, DOI, DOM) Efavirenz Ergolines (e.g., 1P-LSD, ALD-52, bromocriptine, cabergoline, ergine (LSA), ergotamine, lisuride, LA-SS-Az, LSB, LSD, LSD-Pip, LSH, LSP, methylergometrine (methylergonovine), pergolide) Flumexadol Jimscaline Lorcaserin MDxx (e.g., MDA, MDMA, MDOH, MMDA) O-4310 Oxaflozane PHA-57378 PNU-22394 PNU-181731 RH-34 Phenethylamines (e.g., lophophine, mescaline) Piperazines (e.g., BZP, mCPP, quipazine, TFMPP) Serotonin (5-HT) TCB-2 TFMFly Tryptamines (e.g., 5-BT, 5-CT, bufotenin, DET, DiPT, DMT, DPT, psilocin, psilocybin, tryptamine)

Antagonists: 5-I-R91150 5-MeO-NBpBrT AC-90179 Adatanserin Altanserin AMDA APD-215 Atypical antipsychotics (e.g., amperozide, aripiprazole, asenapine, blonanserin, carpipramine, clocapramine, clorotepine, clozapine, fluperlapine, gevotroline, iloperidone, melperone, mosapramine, olanzapine, paliperidone, quetiapine, risperidone, sertindole, zicronapine, ziprasidone, zotepine) Cinanserin CSP-2503 Cyproheptadine Deramciclane Dotarizine Eplivanserin Ergolines (e.g., amesergide, LY-53857, LY-215840, mesulergine, metergoline, methysergide, sergolexole) Etoperidone Fananserin Flibanserin Glemanserin Irindalone Ketanserin KML-010 Lubazodone LY-393558 Medifoxamine Mepiprazole Metitepine (methiothepin) MIN-101 Nantenine Nefazodone Phenoxybenzamine Pimavanserin Pirenperone Pizotifen Pruvanserin Rauwolscine Ritanserin S-14671 Sarpogrelate Setoperone Spiperone Spiramide SR-46349B TGBA01AD Teniloxazine Temanogrel Tetracyclic antidepressants (e.g., amoxapine, aptazapine, esmirtazapine, maprotiline, mianserin, mirtazapine) Trazodone Tricyclic antidepressants (e.g., amitriptyline) Typical antipsychotics (e.g., chlorpromazine, fluphenazine, haloperidol, loxapine, perphenazine, pimozide, pipamperone, prochlorperazine, thioridazine, thiothixene, trifluoperazine) Volinanserin Xylamidine Yohimbine

Unknown/unsorted: Ergolines (e.g., dihydroergotamine, ergometrine (ergonovine), nicergoline) MIN-117 (WF-516)

5-HT_2B

Agonists: 4-Methylaminorex Aminorex Amphetamines (eg., chlorphentermine, cloforex, dexfenfluramine, fenfluramine, levofenfluramine, norfenfluramine) BW-723C86 DOx (e.g., DOB, DOC, DOI, DOM) Ergolines (e.g., cabergoline, dihydroergocryptine, dihydroergotamine, ergotamine, methylergometrine (methylergonovine), methysergide, pergolide) MDxx (e.g., MDA, MDMA, MDOH, MMDA) Piperazines (e.g., mCPP) PNU-22394 Ro60-0175 Serotonin (5-HT) Tryptamines (e.g., 5-BT, 5-CT, 5-MT, α-Me-5-HT, bufotenin, DET, DiPT, DMT, DPT, psilocin, psilocybin, tryptamine)

Antagonists: Agomelatine Asenapine Cyproheptadine EGIS-7625 Ergolines (e.g., amesergide, bromocriptine, lisuride, LY-53857, LY-272015, mesulergine) Ketanserin LY-393558 Metadoxine Metitepine (methiothepin) Pirenperone Propranolol PRX-08066 Rauwolscine Ritanserin RS-127445 Sarpogrelate SB-200646 SB-204741 SB-206553 SB-215505 SB-221284 SB-228357 SDZ SER-082 Tegaserod Tetracyclic antidepressants (e.g., amoxapine, mianserin) TIK-301 Yohimbine

Unknown/unsorted: Ergolines (e.g., ergometrine (ergonovine))

5-HT_2C

Agonists: 2Cs (e.g., 2C-B, 2C-E, 2C-I, 2C-T-2, 2C-T-7, 2C-T-21) 5-Methoxytryptamines (5-MeO-DET, 5-MeO-DiPT, 5-MeO-DMT, 5-MeO-DPT, 5-MT) α-Alkyltryptamines (e.g., 5-Cl-αMT, 5-Fl-αMT, 5-MeO-αET, 5-MeO-αMT, α-Me-5-HT, αET, αMT) A-372159 AL-38022A Alstonine CP-809101 Dimemebfe DOx (e.g., DOB, DOC, DOI, DOM) Ergolines (e.g., ALD-52, cabergoline, dihydroergotamine, ergine (LSA), ergotamine, lisuride, LA-SS-Az, LSB, LSD, LSD-Pip, LSH, LSP, pergolide) Flumexadol Lorcaserin MDxx (e.g., MDA, MDMA, MDOH, MMDA) MK-212 Org 12962 Org 37684 Oxaflozane PHA-57378 Phenethylamines (e.g., lophophine, mescaline) Piperazines (e.g., aripiprazole, BZP, mCPP, quipazine, TFMPP) PNU-22394 PNU-181731 Ro60-0175 Ro60-0213 Serotonin (5-HT) Tryptamines (e.g., 5-BT, 5-CT, bufotenin, DET, DiPT, DMT, DPT, psilocin, psilocybin, tryptamine) Vabicaserin WAY-629 WAY-161503 YM-348

Antagonists: Adatanserin Agomelatine Atypical antipsychotics (e.g., asenapine, clorotepine, clozapine, fluperlapine, iloperidone, melperone, olanzapine, paliperidone, quetiapine, risperidone, sertindole, ziprasidone, zotepine) Captodiame CEPC Cinanserin Cyproheptadine Deramciclane Dotarizine Eltoprazine Ergolines (e.g., amesergide, bromocriptine, LY-53857, LY-215840, mesulergine, metergoline, methysergide, sergolexole) Etoperidone Fluoxetine FR-260010 Irindalone Ketanserin Ketotifen Latrepirdine (dimebolin) Medifoxamine Metitepine (methiothepin) Nefazodone Pirenperone Pizotifen Propranolol Ritanserin RS-102221 S-14671 SB-200646 SB-206553 SB-221284 SB-228357 SB-242084 SB-243213 SDZ SER-082 Tedatioxetine Tetracyclic antidepressants (e.g., amoxapine, aptazapine, esmirtazapine, maprotiline, mianserin, mirtazapine) TIK-301 Trazodone Tricyclic antidepressants (e.g., amitriptyline, nortriptyline) Typical antipsychotics (e.g., chlorpromazine, loxapine, pimozide, pipamperone, thioridazine) Xylamidine

Unknown/unsorted: Efavirenz Ergolines (e.g., ergometrine (ergonovine), methylergometrine (methylergonovine))

5-HT₃

Agonists: Alcohols (e.g., butanol, ethanol, trichloroethanol) m-CPBG Phenylbiguanide Piperazines (e.g., BZP, mCPP, quipazine) RS-56812 Serotonin (5-HT) SR-57227 SR-57227A Tryptamines (e.g., 2-Me-5-HT, 5-CT, bufotenidine (5-HTQ)) Volatiles/gases (e.g., halothane, isoflurane, toluene, trichloroethane) YM-31636

Antagonists: Alosetron AS-8112 Atypical antipsychotics (e.g., clozapine, olanzapine, quetiapine) Azasetron Batanopride Bemesetron (MDL-72222) Cilansetron CSP-2503 Dazopride Dolasetron Galanolactone Granisetron ICS-205930 Lerisetron Memantine Ondansetron Palonosetron Ramosetron Renzapride Ricasetron Tedatioxetine Tetracyclic antidepressants (e.g., amoxapine, mianserin, mirtazapine) Thujone Tropanserin Tropisetron Typical antipsychotics (e.g., loxapine) Volatiles/gases (e.g., nitrous oxide, sevoflurane, xenon) Vortioxetine Zacopride Zatosetron

Unknown/unsorted: LY-53857 Piperazines (e.g., naphthylpiperazine)

5-HT₄

Agonists: 5-MT BIMU8 Cinitapride Cisapride CJ-033466 Dazopride Metoclopramide Mosapride Prucalopride PRX-03140 Renzapride RS-67333 RS-67506 Serotonin (5-HT) SL65.0155 Tegaserod Velusetrag Zacopride

Antagonists: GR-113808 GR-125487 L-Lysine Piboserod RS-39604 RS-67532 SB-203186 SB-204070

5-HT_5A

Agonists: Ergolines (e.g., 2-Br-LSD (BOL-148), ergotamine, LSD) Serotonin (5-HT) Tryptamines (e.g., 5-CT) Valerenic Acid

Antagonists: Asenapine Latrepirdine (dimebolin) Metitepine (methiothepin) Ritanserin SB-699551 Unknown/unsorted: Ergolines (e.g., metergoline, methysergide) Piperazines (e.g., naphthylpiperazine)

5-HT₆

Agonists: Ergolines (e.g., dihydroergocryptine, dihydroergotamine, ergotamine, lisuride, LSD, mesulergine, metergoline, methysergide) Serotonin (5-HT) Tryptamines (e.g., 2-Me-5-HT, 5-BT, 5-CT, 5-MT, Bufotenin, E-6801, E-6837, EMD-386088, EMDT, LY-586713, N-Me-5-HT, tryptamine) WAY-181187 WAY-208466

Antagonists: ABT-354 Atypical antipsychotics (e.g., aripiprazole, asenapine, clorotepine, clozapine, fluperlapine, iloperidone, olanzapine, tiospirone) AVN-101 AVN-211 AVN-322 AVN-397 BGC20-760 BVT-5182 BVT-74316 Cerlapirdine EGIS-12233 GW-742457 Idalopirdine Ketanserin Latrepirdine (dimebolin) Metitepine (methiothepin) MS-245 PRX-07034 Ritanserin Ro04-6790 Ro 63-0563 SB-258585 SB-271046 SB-357134 SB-399885 SB-742457 Tetracyclic antidepressants (e.g., amoxapine, mianserin) Tricyclic antidepressants (e.g., amitriptyline, clomipramine, doxepin, nortriptyline) Typical antipsychotics (e.g., chlorpromazine, loxapine)

Unknown/unsorted: Ergolines (e.g., 2-Br-LSD (BOL-148), bromocriptine, lergotrile, pergolide) Piperazines (e.g., naphthylpiperazine)

5-HT₇

Agonists: 8-OH-DPAT AS-19 Bifeprunox E-55888 Ergolines (e.g., LSD) LP-12 LP-44 RU-24969 Sarizotan Serotonin (5-HT) Triptans (e.g., frovatriptan) Tryptamines (e.g., 5-CT, 5-MT, bufotenin, N-Me-5-HT)

Antagonists: Atypical antipsychotics (e.g., amisulpride, aripiprazole, asenapine, clorotepine, clozapine, fluperlapine, olanzapine, risperidone, sertindole, tiospirone, ziprasidone, zotepine) Butaclamol DR-4485 EGIS-12233 Ergolines (e.g., 2-Br-LSD (BOL-148), amesergide, bromocriptine, cabergoline, dihydroergotamine, ergotamine, LY-53857, LY-215840, mesulergine, metergoline, methysergide, sergolexole) Ketanserin LY-215840 Metitepine (methiothepin) Ritanserin SB-258719 SB-258741 SB-269970 SB-656104 SB-656104A SB-691673 SLV-313 SLV-314 Spiperone SSR-181507 Tetracyclic antidepressants (e.g., amoxapine, maprotiline, mianserin, mirtazapine) Tricyclic antidepressants (e.g., amitriptyline, clomipramine, imipramine) Typical antipsychotics (e.g., acetophenazine, chlorpromazine, chlorprothixene, fluphenazine, loxapine, pimozide) Vortioxetine

Unknown/unsorted: Ergolines (e.g., lisuride, pergolide) Piperazines (e.g., naphthylpiperazine)

Reuptake inhibitors

SERT

Selective serotonin reuptake inhibitors (SSRIs): Alaproclate Cericlamine Citalopram Dapoxetine Desmethylcitalopram Escitalopram Femoxetine Fluoxetine Fluvoxamine Indalpine Ifoxetine Omiloxetine Panuramine Paroxetine Pirandamine RTI-353 Seproxetine Sertraline Vilazodone Zimelidine

Serotonin-norepinephrine reuptake inhibitors (SNRIs): Bicifadine BTS-54505 Desvenlafaxine Duloxetine Eclanamine Levomilnacipran McN-5652 Milnacipran N-Methyl-PPPA PPPA Sibutramine Venlafaxine WY-45233

Serotonin-norepinephrine-dopamine reuptake inhibitors (SNDRIs): (S)-Duloxetine 3,3-Diphenylcyclobutanamine Amifitadine Ansofaxine Bicifadine Brasofensine Centanafadine Cocaine Dasotraline Desmethylsertraline Diclofensine DOV-102677 DOV-216303 EXP-561 Fezolamine HDMP-28 Indatraline JNJ-7925476 JZ-IV-10 Liafensine Mazindol Naphyrone Nefazodone Nefopam NS-2359 Perafensine PRC200 SEP-228431 SEP-228432 Tedatioxetine Tesofensine

Tricyclic antidepressants (TCAs): Amitriptyline Butriptyline Cianopramine Clomipramine Desipramine Dosulepin Doxepin Imipramine Lofepramine Nortriptyline Pipofezine Protriptyline Trimipramine

Others: A-80426 Amoxapine Antihistamines (e.g., brompheniramine, chlorphenamine, dimenhydrinate, diphenhydramine, mepyramine (pyrilamine), pheniramine, tripelennamine) Arylcyclohexylamines (e.g., esketamine, ketamine, phencyclidine) CP-39332 Cyclobenzaprine Dextromethorphan Dextrorphan Efavirenz Etoperidone EXP-561 Fezolamine Litoxetine LY-393558 Loxapine Lubazodone Medifoxamine Mesembrine Mifepristone MIN-117 (WF-516) N-Me-5-HT Opioids (e.g., dextropropoxyphene, methadone, pethidine (meperidine), levorphanol) PIM-35 Pridefine Roxindole SB-649915 TGBA01AD Tofenacin Trazodone Tropanes (e.g., cocaine) Vortioxetine Ziprasidone

VMATs

Amiodarone
Amphetamines (e.g., amphetamine, methamphetamine, MDMA)
APP
AZIK
Bietaserpine
Deserpidine
Dihydrotetrabenazine
Efavirenz
GBR-12935
GZ-793A
Ibogaine
Ketanserin
Lobeline
Methoxytetrabenazine
NBI-98854
Reserpine
Rose bengal
SD-809
Tetrabenazine
Vanoxerine (GBR-12909)

Releasing agents

Aminoindanes: 5-IAI AMMI ETAI MDAI MDMAI MMAI TAI

Aminotetralins: 6-CAT 8-OH-DPAT MDAT MDMAT

Oxazolines: 4-Methylaminorex Aminorex Clominorex Fluminorex

Phenethylamines: 2-Methyl-MDA 4-CAB 4-FA 4-FMA 4-HA 4-MTA 5-APDB 5-Methyl-MDA 6-APDB 6-Methyl-MDA AEMMA Amiflamine BDB BOH Brephedrone Butylone Chlorphentermine Cloforex Amfepramone Metamfepramone DCA Dexfenfluramine DFMDA DMA DMMA EBDB EDMA Ethylone Etolorex Fenfluramine Flephedrone Flucetorex IAP IMP Iofetamine Levofenfluramine Lophophine MBDB MDA MDEA MDHMA MDMA MDMPEA MDOH MDPEA Mephedrone Methedrone Methylone MMA MMDA MMDMA MMMA NAP Norfenfluramine 4-TFMA pBA pCA pIA PMA PMEA PMMA TAP

Piperazines: 2C-B-BZP 3-MeOPP BZP DCPP MBZP mCPP MDBZP MeOPP Mepiprazole pCPP pFPP pTFMPP TFMPP

Tryptamines: 4-Methyl-αET 4-Methyl-αMT 5-CT 5-MeO-αET 5-MeO-αMT 5-MT αET αMT DMT Tryptamine

Others: Indeloxazine Tramadol Viqualine

Non-selective: Benmoxin Caroxazone Echinopsidine Furazolidone Hydralazine Indantadol Iproclozide Iproniazid Isocarboxazid Isoniazid Linezolid Mebanazine Metfendrazine Nialamide Octamoxin Paraxazone Phenelzine Pheniprazine Phenoxypropazine Pivalylbenzhydrazine Procarbazine Safrazine Tranylcypromine

MAO-A-selective: Amiflamine Bazinaprine Befloxatone Brofaromine Cimoxatone Clorgiline Eprobemide Esuprone Harmala alkaloids (e.g., harmine, harmaline, harman, norharman, tetrahydroharmine) Methylene blue Metralindole Minaprine Moclobemide Pirlindole Sercloremine Tetrindole Toloxatone Tyrima

Others

Precursors	L-Tryptophan → 5-HTP

Cofactors	Ferrous iron (Fe²⁺) Magnesium (Mg²⁺) Tetrahydrobiopterin Vitamin B₃ (Niacin Nicotinamide → NADPH) Vitamin B₆ (Pyridoxine Pyridoxamine Pyridoxal → Pyridoxal phosphate) Vitamin B₉ (Folic Acid → Tetrahydrofolic acid) Vitamin C (Ascorbic acid) Zinc (Zn²⁺)

Neurotoxins	3-CA 4-CAB 5,7-DHT α-Me-DA (3,4-DHA) αET αMT DCA MDA MDMA PBA PCA PIA

Others	Activity enhancers: BPAP PPAP

See also: Adrenergics
Dopaminergics
Melatonergics

Piperazines

Simple piperazines (no additional rings)	1-Cyclohexylpiperazine Aminoethylpiperazine Diethylcarbamazine HEPPS Midafotel Piperazine PIPES

Phenylpiperazines	Acaprazine Antrafenine Aripiprazole Batoprazine Bifeprunox BRL-15,572 Ciprofloxacin CSP-2503 Dapiprazole DCPP DMPP Diphenylpiperazine Dropropizine EGIS-12,233 Elopiprazole Eltoprazine Enpiprazole Ensaculin Etoperidone Flesinoxan Flibanserin Fluprazine Itraconazole Ketoconazole Levodropropizine Lorpiprazole mCPP Mefway MeOPP Mepiprazole Naftopidil Naluzotan Naphthylpiperazine Nefazodone Niaprazine Oxypertine Pardoprunox pCPP pFPP Posaconazole S-14,506 S-14,671 S-15,535 SB-258,585 SB-271,046 SB-357,134 SB-399,885 Sonepiprazole TFMPP Tolpiprazole Trazodone Urapidil Vesnarinone Vilazodone Vortioxetine WAY-100,135 WAY-100,635

Benzylpiperazines	2C-B-BZP Befuraline Bifeprunox Buclizine BZP Chlorbenzoxamine DBZP Fipexide Imatinib MBZP MDBZP Meclozine Methoxypiperamide Piberaline Piribedil Sunifiram Trimetazidine Vesnarinone

Diphenylalkylpiperazines (benzhydrylalkylpiperazines)	Almitrine Amperozide BRL-15,572 Buclizine BW373U86 Cetirizine Chlorbenzoxamine Chlorcyclizine Cinnarizine Clocinizine Cyclizine DBL-583 Diphenylmethylpiperazine Dotarizine DPI-221 DPI-287 DPI-3290 GBR-12,783 GBR-12,935 GBR-13,069 GBR-13,098 GBR-13,119 Hydroxyzine Lidoflazine Manidipine Meclozine Oxatomide SNC-80 Vanoxerine

Pyrimidinylpiperazines	Buspirone Dasatinib Eptapirone Gepirone Ipsapirone Piribedil Prazitone Pyrimidinylpiperazine Revospirone Tandospirone Tirilazad Trimazosin Umespirone Zalospirone

Pyridinylpiperazines	Atevirdine Azaperone Delavirdine Mirtazapine Pyridinylpiperazine

Benzo(iso)thiazolyl piperazines	Lurasidone Perospirone Revospirone Tiospirone Ziprasidone

Tricyclics (piperazine attached via side chain)	Amoxapine Clopenthixol Clorotepine Clozapine Cyanothepin Doclothepin Docloxythepin Flupentixol Fluphenazine Isofloxythepin Loxapine Meperathiepin Metitepine Octomethothepin Olanzapine Opipramol Oxyclothepin Oxyprothepin Peradithiepin Perathiepin Perazine Perphenazine Pirenzepine Prochlorperazine Thiethylperazine Thiothixene Trifluoperazine Trifluthepin Zuclopenthixol

Others/Uncategorized	6-Nitroquipazine Azimilide Cinepazet Cinepazic acid Cinepazide Cyclohexylpiperazine Hexocyclium Indinavir JNJ-7777120 Lodenafil Mirodenafil PB-28 Quipazine Ranolazine SA-4503 Sildenafil Tadalafil Vardenafil VUF-6002 Zipeprol

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Gepirone

See also

References