Chemical compound
Pharmaceutical compound
4-HO-MET , also known as4-hydroxy-N -methyl-N -ethyltryptamine , as well asmetocin ormethylcybin , is apsychedelic drug of thetryptamine and4-hydroxytryptamine families related topsilocin (4-HO-DMT).[ 1] orally .[ 1]
The drug acts as anon-selective serotonin receptor agonist , including of theserotonin 5-HT2A receptor .[ 4] [ 5] [ 6] [ 7] structural analogue of psilocin (4-HO-DMT) and is the 4-hydroxyl analogue ofmethylethyltryptamine (MET).[ 1]
4-HO-MET was discovered byAlexander Shulgin in the 1970s.[ 8] [ 9] [ 1] David Repke and colleagues in 1981.[ 10] recreational anddesigner drug by 2008.[ 11]
In his bookTiHKAL Tryptamines I Have Known and Loved ),Alexander Shulgin lists the dose range of 4-HO-MET as 10 to 20 mgorally and itsduration as 4 to 6 hours.[ 1] [ 12] [ 3] recreational dose range of 2 to 45 mg or more orally, with a typical dose estimate of 15 mg, has also been reported.[ 13] onset is said to be within 30 minutes.[ 1]
The effects of 4-HO-MET have been reported to includepupil dilation ,euphoria ,tingling sensations ,perceptual changes ,closed- andopen-eye visuals ,synesthesia ,time dilation , intensifiedperceptions ,thoughts , andfeelings , and a general change in thought processes.[ 3] [ 8] [ 1] color and form, feelingsounds , and a wave-like experience with alternation between near-normal perception one moment and a "swirl of altered concept" the next moment.[ 1]
4-HO-MET is said to produce qualitative effects very similar to those ofpsilocin .[ 1] [ 8] [ 3] blinded clinical study .[ 1] head space .[ 8] psychedelic visuals .[ 8] 2C-B .[ 8]
In addition to its use on its own, 4-HO-MET, along with the related tryptamine psychedelic5-MeO-MiPT , is employed at low doses as a component of theMDMA -mimickingBorax combo .[ 14] [ 15] [ 16]
4-HO-MET activities Target Affinity (Ki , nM)5-HT1A 135–950 (Ki )EC50 Tooltip half-maximal effective concentration )Emax Tooltip maximal efficacy ) 5-HT1B 331 5-HT1D 197 5-HT1E 161 5-HT1F ND 5-HT2A 4.0–177 (Ki )EC50 ) Emax ) 5-HT2B 12 (Ki )EC50 ) Emax ) 5-HT2C 141–164 (Ki )EC50 ) Emax ) 5-HT3 ND 5-HT4 ND 5-HT5A 304 5-HT6 70 5-HT7 60 α1A 9,700 α1B ,α1D ND α2A 1,666–2,400 α2B ,α2C IA β1 –β3 ND β2 ND D1 25,000 D2 4,000 D3 6,700 D4 ,D5 IA H1 483–820 H2 IA H3 ,H4 ND M1 –M3 ,M5 ND M2 IA I1 ND σ1 ,σ2 IA TAAR1 Tooltip Trace amine-associated receptor 1 12,000 (Ki ) (mouse)i ) (rat)EC50 ) (mouse) EC50 ) (rat) EC50 ) (human) Emax ) (mouse) Emax ) (rat) SERT Tooltip Serotonin transporter 200–2,310 (Ki )IC50 Tooltip half-maximal inhibitory concentration )IA ( EC50 ) NET Tooltip Norepinephrine transporter 13,000 (Ki )IC50 ) IA ( EC50 ) DAT Tooltip Dopamine transporter >26,000 (Ki )IC50 ) IA ( EC50 ) Notes: The smaller the value, the more avidly the drug binds to the site. All proteins are human unless otherwise specified.Refs: [ 4] [ 5] [ 6] [ 7] [ 17]
4-HO-MET binds to variousserotonin receptors and is known to act as anagonist of theserotonin 5-HT2A ,5-HT2B ,5-HT2C , and5-HT1A receptors .[ 4] [ 5] [ 6] [ 7] hallucinogenic effects ofserotonergic psychedelics like 4-HO-MET are mediated by serotonin 5-HT2A receptor activation.[ 18]
Themetabolism of 4-HO-MET has been studied.[ 19]
4-HO-MET, also known as 4-hydroxy-N -methyl-N -ethyltryptamine, is asubstituted tryptamine and4-hydroxytryptamine .[ 1] hydroxy derivative ofN -methyl-N -ethyltryptamineanalogue ofpsilocin (4-hydroxy-N ,N -dimethyltryptamine; 4-HO-DMT).[ 1]
Thechemical synthesis of 4-HO-MET has been described.[ 1] [ 10]
Analogues of 4-HO-MET includepsilocin (4-HO-DMT),4-HO-DET (ethocin),4-HO-MiPT (miprocin),4-HO-DPT (deprocin),4-HO-MPT (meprocin),4-HO-DALT (dalocin), and4-HO-MALT (malocin), among others.[ 1] 4-AcO-MET (metacetin) is anester prodrug of 4-HO-MET.[ 7]
4-HO-MET was firstsynthesized and discovered byAlexander Shulgin in the 1970s.[ 8] [ 9] [ 1] scientific literature byDavid Repke and colleagues by 1981.[ 10] TiHKAL Tryptamines I Have Known and Loved ) in 1997.[ 1] recreational anddesigner drug inEurope by 2008.[ 11]
Society and culture [ edit ] Scheduled in the "government decree on psychoactive substances banned from the consumer market".[ 20]
4-HO-MET is ruled under the Neue-psychoaktive-Stoffe-Gesetz (NpSG) since July 18, 2019. Production and Import with intent to distribute is punishable. Possession is forbidden but not punishable, although ordering it in small quantities can still be seen as an intent to distribute it and be punished.[citation needed
4-Propionoxy-N-methyl-N-ethyltryptamine (also referred to as 4-PrO-MET) is the ester prodrug of 4-HO-MET. Unlike many other tryptamine derivatives, it is currently not explicitly listed under the German Neue-psychoaktive-Stoffe-Gesetz (NpSG). This means that, while its use as a recreational substance is not legally permitted, the compound may be obtained and handled for legitimate research purposes, provided all other relevant legal requirements and safety regulations are observed.[citation needed
The SwedishRiksdag added 4-HO-MET to Schedule I ("substances, plant materials and fungi which normally do not have medical use" ) as narcotics in Sweden as of May 1, 2012, published byMedical Products Agency [ 21]
4-HO-MET is a class A drug in theUnited Kingdom , as a result of the tryptamine catch-all clause.[citation needed
4-HO-MET is not scheduled at the federal level in theUnited States , but it is possible that it could be considered an analogue of psilocin, in which case purchase, sale, or possession could be prosecuted under theFederal Analogue Act .[ 22]
It is a schedule I substance in some states, such asSouth Dakota [ 23] West Virginia .[ 24]
^a b c d e f g h i j k l m n o p q r s Shulgin A ,Shulgin A (September 1997).TiHKAL: The Continuation Berkeley, California :Transform Press .ISBN 0-9630096-9-9 OCLC 38503252 .https://www.erowid.org/library/books_online/tihkal/tihkal21.shtml ^ "§ 54.1-3446. Schedule I." Virginia Law . Retrieved29 October 2023 .^a b c d Kjellgren A, Soussan C (2011). "Heaven and hell--a phenomenological study of recreational use of 4-HO-MET in Sweden".J Psychoactive Drugs .43 (3):211– 219.doi :10.1080/02791072.2011.605699 .PMID 22111404 . ^a b c Rickli A, Moning OD, Hoener MC, Liechti ME (August 2016)."Receptor interaction profiles of novel psychoactive tryptamines compared with classic hallucinogens" (PDF) .European Neuropsychopharmacology .26 (8):1327– 1337.doi :10.1016/j.euroneuro.2016.05.001 .PMID 27216487 .S2CID 6685927 . ^a b c Glatfelter GC, Naeem M, Pham DN, Golen JA, Chadeayne AR, Manke DR, et al. (April 2023)."Receptor Binding Profiles for Tryptamine Psychedelics and Effects of 4-Propionoxy-N,N-dimethyltryptamine in Mice" .ACS Pharmacol Transl Sci .6 (4):567– 577.doi :10.1021/acsptsci.2c00222 .PMC 10111620 PMID 37082754 . ^a b c Kozell LB, Eshleman AJ, Swanson TL, Bloom SH, Wolfrum KM, Schmachtenberg JL, et al. (April 2023)."Pharmacologic Activity of Substituted Tryptamines at 5-Hydroxytryptamine (5-HT)2A Receptor (5-HT2AR), 5-HT2CR, 5-HT1AR, and Serotonin Transporter" .J Pharmacol Exp Ther .385 (1):62– 75.doi :10.1124/jpet.122.001454 .PMC 10029822 PMID 36669875 . ^a b c d Klein AK, Chatha M, Laskowski LJ, Anderson EI, Brandt SD, Chapman SJ, et al. (April 2021)."Investigation of the Structure-Activity Relationships of Psilocybin Analogues" .ACS Pharmacol Transl Sci .4 (2):533– 542.doi :10.1021/acsptsci.0c00176 .PMC 8033608 PMID 33860183 . ^a b c d e f g Palamar JJ, Acosta P (January 2020)."A qualitative descriptive analysis of effects of psychedelic phenethylamines and tryptamines" .Human Psychopharmacology .35 (1) e2719.doi :10.1002/hup.2719 .PMC 6995261 PMID 31909513 . ^a b Zamberlan F, Sanz C, Martínez Vivot R, Pallavicini C, Erowid F, Erowid E, et al. (2018)."The Varieties of the Psychedelic Experience: A Preliminary Study of the Association Between the Reported Subjective Effects and the Binding Affinity Profiles of Substituted Phenethylamines and Tryptamines" .Front Integr Neurosci .12 54.doi :10.3389/fnint.2018.00054 PMC 6235949 PMID 30467466 .4-OH-MET (4-Hydroxy-N-methyl-N-ethyltryptamine): substituted tryptamine and close analog of psilocin, first synthesized by A. Shulgin (Shulgin and Shulgin, 1997). ^a b c Repke DB, Ferguson WJ, Bates DK (1981). "Psilocin analogs II. Synthesis of 3-[2-(dialkylamino)ethyl]-, 3-[2-( N -methyl- N -alkylamino)ethyl]-, and 3-[2-(cycloalkylamino)ethyl]indol-4-ols".Journal of Heterocyclic Chemistry .18 (1):175– 179.doi :10.1002/jhet.5570180131 .ISSN 0022-152X . ^a b "2015 Annual Reports on the implementation of Council Decision 2005/387/JHA" .Europol . 2008. Retrieved30 March 2025 .^ Shulgin AT (2003)."Basic Pharmacology and Effects" . In Laing RR (ed.).Hallucinogens: A Forensic Drug Handbook 67– 137.ISBN 978-0-12-433951-4 ^ Luethi D, Liechti ME (October 2018)."Monoamine Transporter and Receptor Interaction Profiles in Vitro Predict Reported Human Doses of Novel Psychoactive Stimulants and Psychedelics" .Int J Neuropsychopharmacol .21 (10):926– 931.doi :10.1093/ijnp/pyy047 .PMC 6165951 PMID 29850881 . ^ Baggott M (23 June 2023).Beyond Ecstasy: Progress in Developing and Understanding a Novel Class of Therapeutic Medicine Multidisciplinary Association for Psychedelic Studies . ^ Hamilton Morris (28 November 2023)."POD 92: Understanding and Improving MDMA with Dr. Matthew Baggott" .The Hamilton Morris Podcast . Retrieved30 November 2024 .^ "Borax Combo (Synonyms: Blue Bliss)" .naddi.org . National Association of Drug Diversion Investigators (NADDI). 14 December 2022. Retrieved21 November 2024 .^ Simmler LD, Buchy D, Chaboz S, Hoener MC, Liechti ME (April 2016)."In Vitro Characterization of Psychoactive Substances at Rat, Mouse, and Human Trace Amine-Associated Receptor 1" (PDF) .J Pharmacol Exp Ther .357 (1):134– 144.doi :10.1124/jpet.115.229765 .PMID 26791601 . Archived fromthe original (PDF) on 9 May 2025. ^ Nichols DE (April 2016)."Psychedelics" (PDF) .Pharmacol Rev .68 (2):264– 355.doi :10.1124/pr.115.011478 .PMC 4813425 PMID 26841800 . ^ Bruni PS, Grafinger KE, Nussbaumer S, König S, Schürch S, Weinmann W (September 2018). "Study of the in vitro and in vivo metabolism of 4-HO-MET".Forensic Sci Int .290 :103– 110.doi :10.1016/j.forsciint.2018.06.037 .PMID 30015274 . ^ "Valtioneuvoston asetus kuluttajamarkkinoilta kielletyistä psykoaktiivisista aineista" [Government Decree on psychoactive substances banned from the consumer market].Finlex (in Finnish). Finish Ministry of Justice.^ "Föreskrifter om ändring i Läkemedelsverkets föreskrifter (LVFS 2011:10) om förteckningar över narkotika" [Regulations on changes in the Swedish Medicines Agency's regulations (LVFS 2011:10) on lists of narcotics](PDF) (in Swedish). Elanders Sverige AB. 2012-04-20. Archived fromthe original (PDF) on 2013-09-28. Retrieved2014-02-25 .^ "21 U.S. Code § 841 - Prohibited acts A" ,LII / Legal Information Institute , retrieved2016-08-02 ^ "Chapter 34-20B Drugs and Substances Control" .South Dakota Legislature . Retrieved2023-10-09 .^ "Chapter 60A. Uniform Controlled Substances Act" .West Dakota Legislature . Retrieved2023-10-09 .
Tryptamines
No ring subs. 4-Hydroxytryptamines 5-Hydroxytryptamines 5-Methoxytryptamines Other ring subs. α-Alkyltryptamines Others Cyclized Ergolines /lysergamides (e.g.,LSD )β-Carbolines andHarmala alkaloidsharmine ,harmaline ,6-methoxyharmalan )Iboga alkaloids18-MAC ,18-MC ,coronaridine ,ibogaine ,ibogamine ,ME-18-MC ,noribogaine ,tabernanthine ,voacangine )Ibogalogs (e.g.,ibogainalog )O -MethylnordehydrobufoteninePartial ergolines (e.g.,NDTDI ,RU-28306 ,CT-5252 )Piperidinylethylindoles (e.g.,pip-T )Pyrrolidinylethylindoles (e.g.,pyr-T ,5-MeO-pyr-T )Pyrrolidinylmethylindoles (e.g.,MPMI ,4-HO-MPMI (lucigenol) ,5-MeO-MPMI )Tetrahydropyridinylindoles (e.g.,RU-28253 (5-MeO-THPI) ,NEtPhOH-THPI )Bioisosteres Benzofurans (e.g.,5-MeO-DiBF ,dimemebfe (5-MeO-BFE) ,mebfap )Benzothiophenes (e.g.,3-APBT )Indazolethylamines (e.g.,AL-38022A ,O -methyl-AL-34662Indenylethylamines (e.g.,C-DMT )Isotryptamines (e.g.,6-MeO-isoDMT ,Ro60-0175 )MYCO-005 Quinolinylethylamines (e.g.,mefloquine )
Phenethylamines
Scalines 2C-x Others: 2C-B-AN 2C-DB 2C-G-x (e.g.,2C-G-3 ,2C-G-5 )β-Keto-2C-B (βk-2C-B) β-Keto-2C-I (βk-2C-I) β-Methyl-2C-B (BMB) BOx BOB ,BOD ,BOH-2C-B )HOT-x HOT-2 ,HOT-7 ,HOT-17 )N -Ethyl-2C-BTWEETIOs 2CD-2-ETO ,2CD-5-ETO ,2CE-5-ETO ,2CE-5iPrO ,2CT2-5-ETO ,ASR-2001 (2CB-5PrO) )3C-x DOx 4C-x Ψ-PEA MDxx FLY 25x-NB (NBOMes) Others 2-TOET 2-TOM 25B-NAcPip 4-HA 5-TOET 5-TOM Benzofurans (e.g.,5-APB ,5-APDB ,6-APB ,6-APDB ,F ,F-2 ,F-22 )Benzothiophenes (e.g.,5-APBT ,6-APBT )CT-5172 DMAs (e.g.,2,4-DMA ,3,4-DMA )Fenfluramine MMA (3-MeO-4-MA) Norfenfluramine PEA-NDEPAs 25D-NM-NDEAOP ,DOB-NDEPA ,DOI-NDEPA ,DOM-NDEPA ,DOTFM-NDEPA ,M-NDEPA ,TMA-2-NDEPA )PMA (4-MA) TMAs TMA-3 ,TMA-4 ,TMA-5 )TOMSO ZDCM-04 Cyclized 1-Aminomethylindanes (e.g.,2CB-Ind ,jimscaline )2-Aminoindanes (e.g.,DOM-AI )3-Benzazepines (e.g.,lorcaserin )3-Phenylpiperidines (e.g.,LPH-5 ,LPH-48 )Benzocyclobutenes (e.g.,2CBCB-NBOMe ,TCB-2 ,tomscaline )Benzoxepins (e.g.,BBOX ,IBOX ,TFMBOX )DMBMPP (juncosamine) Ergolines /lysergamides (e.g.,LSD )Glaucine Partial ergolines (e.g.,NDTDI ,DEIMDHPCA ,DEMPDHPCA ,DEMTMPDHPCA ,DEMNDHPCA )Phenylcyclopropylamines (e.g.,DMCPA ,TMT )Phenyloxazolamines (aminorexes ) (e.g.,2C-B-aminorex )Pyridopyrroloquinoxalines (e.g.,IHCH-7113 )Z3517967757 ZC-B
Lysergamides Others Arylpiperazines (e.g.,2C-B-PP ,2-NP ,mCPP ,MK-212 ,ORG-12962 ,pCPP ,pFPP ,quipazine ,TFMPP )Dihydrobenzoxazines (e.g.,efavirenz )Phenoxyethylamines (e.g.,CT-4719 ,ORG-37684 )Pyridopyrroloquinoxalines (e.g.,IHCH-7113 )Quinazolinylethylamines (e.g.,RH-34 )Natural sources Tryptamines: Acacia spp.Acacia acuminata Acacia confusa Ayahuasca andvinho de Jurema (e.g.,Psychotria viridis (chacruna)Dipolopterys cabrerana (chaliponga, chacruna)Mimosa tenuiflora (Mimosa hostilis ; jurema)Brosimum Brosimum acutifolium (takini)Hallucinogenic snuffs (e.g.,Anadenanthera peregrina (yopo, jopo, cohoba, parica, ebene)Anadenanthera colubrina (vilca, cebil)Incilius alvarius (Bufo alvarius ; Colorado River toad, Sonoran Desert toad; bufo)Psilocybin-containing mushrooms (magic mushrooms, shrooms) (e.g.,Psilocybe cubensis Psilocybe mexicana (teonanacatl)Lysergamides: Achnatherum robustum (sleepy grass)Epichloë spp.Ergot (Claviceps ) (e.g.,Claviceps purpurea Claviceps paspali Morning glory (Convolvulaceae) seeds (e.g.,Ipomoea tricolor (tlitliltzin, badoh negro;Ipomoea violacea )Ipomoea corymbosa (coaxihuitl, ololiúqui;Rivea Corymbosa ,Turbina Corymbosa )Argyreia nervosa (Hawaiian baby woodrose; HBWR)Periglandula spp.Periglandula ipomoeae Periglandula clandestina
5-HT1
5-HT1A
Agonists: 4-F-5-MeO-pyr-T 5-MeO-pip-T 5-MeO-pyr-T 8-OH-DPAT Adatanserin Amphetamine Antidepressants (e.g.,etoperidone ,hydroxynefazodone ,nefazodone ,trazodone ,triazoledione ,vilazodone ,vortioxetine )Atypical antipsychotics (e.g.,aripiprazole ,asenapine ,brexpiprazole ,cariprazine ,clozapine ,lurasidone ,quetiapine ,ziprasidone )Azapirones (e.g.,buspirone ,eptapirone ,gepirone ,perospirone ,tandospirone )Bay R 1531 Befiradol BMY-14802 Cannabidiol Dimemebfe Dopamine Ebalzotan Eltoprazine Enciprazine 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 Hypidone 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 TMU4142 U-92016-A Urapidil Vilazodone Xaliproden Yohimbine Antagonists: Atypical antipsychotics (e.g.,iloperidone ,risperidone ,sertindole )AV965 Beta blockers (e.g.,alprenolol ,carteolol ,cyanopindolol ,iodocyanopindolol ,isamoltane ,oxprenolol ,penbutolol ,pindobind ,pindolol ,propranolol ,tertatolol )BMY-7378 CSP-2503 Dotarizine Ergolines (e.g.,metergoline )FCE-24379 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
5-HT1B
Agonists: Anpirtoline AZ10419369 Benzofurans (e.g.,5-MAPB ,6-MAPB ,BK-5-MAPB ,BK-6-MAPB )Benzothiophenes (e.g.,5-MAPBT ,6-MAPBT ,BK-5-MAPBT )CGS-12066A CP-93129 CP-94253 CP-122288 CP-135807 Eltoprazine Ergolines (e.g.,bromocriptine ,dihydroergotamine ,ergotamine ,methylergometrine (methylergonovine) ,methysergide ,pergolide )mCPP Methylenedioxyphenethylamines (e.g.,MDMA ,methylone )PZKKN-94 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
5-HT1D
Agonists: CP-122288 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 )
5-HT1E
5-HT1F
5-HT2
5-HT2A
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) ,ergometrine (ergonovine) ,ergotamine ,lisuride ,LA-SS-Az ,LSB ,LSD ,LSD-Pip ,LSH ,LSP ,methylergometrine (methylergonovine) ,pergolide )Flumexadol IHCH-7113 Jimscaline Lorcaserin MDxx (e.g.,MDA (tenamfetamine) ,MDMA (midomafetamine) ,MDOH ,MMDA )O-4310 Oxaflozane PHA-57378 PNU-22394 PNU-181731 RH-34 SCHEMBL5334361 Phenethylamines (e.g.,lophophine ,mescaline )Piperazines (e.g.,BZP ,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 Antihistamines (e.g.,cyproheptadine ,hydroxyzine ,ketotifen ,perlapine )AMDA Atypical antipsychotics (e.g.,amperozide ,aripiprazole ,asenapine ,blonanserin ,brexpiprazole ,carpipramine ,clocapramine ,clorotepine ,clozapine ,fluperlapine ,gevotroline ,iloperidone ,lurasidone ,melperone ,mosapramine ,ocaperidone ,olanzapine ,paliperidone ,quetiapine ,risperidone ,sertindole ,zicronapine ,ziprasidone ,zotepine )Chlorprothixene Cinanserin CSP-2503 Deramciclane Dotarizine Eplivanserin Ergolines (e.g.,amesergide ,LY-53857 ,LY-215840 ,mesulergine ,metergoline ,methysergide ,sergolexole )Fananserin Flibanserin Glemanserin Irindalone Ketanserin KML-010 Landipirdine LY-393558 mCPP Medifoxamine Metitepine (methiothepin) MIN-117 (WF-516) Naftidrofuryl Nantenine Nelotanserin Opiranserin (VVZ-149) Pelanserin Phenoxybenzamine Pimavanserin Pirenperone Pizotifen Pruvanserin Rauwolscine Ritanserin Roluperidone S-14671 Sarpogrelate Serotonin antagonists and reuptake inhibitors (e.g.,etoperidone ,hydroxynefazodone ,lubazodone ,mepiprazole ,nefazodone ,triazoledione ,trazodone )SR-46349B TGBA01AD Teniloxazine Temanogrel Tetracyclic antidepressants (e.g.,amoxapine ,aptazapine ,esmirtazapine ,maprotiline ,mianserin ,mirtazapine )Tricyclic antidepressants (e.g.,amitriptyline )Typical antipsychotics (e.g.,chlorpromazine ,fluphenazine ,haloperidol ,loxapine ,perphenazine ,pimozide ,pipamperone ,prochlorperazine ,setoperone ,spiperone ,spiramide ,thioridazine ,thiothixene ,trifluoperazine )Volinanserin Xylamidine Yohimbine
5-HT2B
Agonists: 4-Methylaminorex Aminorex Amphetamines (e.g.,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 )Lorcaserin MDxx (e.g.,MDA (tenamfetamine) ,MDMA (midomafetamine) ,MDOH ,MMDA )Piperazines (e.g.,TFMPP )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 Atypical antipsychotics (e.g.,amisulpride ,aripiprazole ,asenapine ,brexpiprazole ,cariprazine ,clozapine ,N-desalkylquetiapine (norquetiapine) ,N-desmethylclozapine (norclozapine) ,olanzapine ,pipamperone ,quetiapine ,risperidone ,ziprasidone )Cyproheptadine EGIS-7625 Ergolines (e.g.,amesergide ,bromocriptine ,lisuride ,LY-53857 ,LY-272015 ,mesulergine )Ketanserin LY-393558 mCPP Metadoxine Metitepine (methiothepin) Pirenperone Pizotifen 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 ,mirtazapine )Trazodone Typical antipsychotics (e.g.,chlorpromazine )TIK-301 Yohimbine
5-HT2C
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 (tenamfetamine) ,MDMA (midomafetamine) ,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 Desmetramadol 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 Tramadol Trazodone Tricyclic antidepressants (e.g.,amitriptyline ,nortriptyline )Typical antipsychotics (e.g.,chlorpromazine ,loxapine ,pimozide ,pipamperone ,thioridazine )Xylamidine
5-HT3 –7
5-HT3
Agonists: Alcohols (e.g.,butanol ,ethanol (alcohol) ,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 Anpirtoline Arazasetron AS-8112 Atypical antipsychotics (e.g.,clozapine ,olanzapine ,quetiapine )Azasetron Batanopride Bemesetron (MDL-72222) Cilansetron CSP-2503 Dazopride Dolasetron Galanolactone Granisetron 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
5-HT4
5-HT5A
5-HT6
Agonists: Ergolines (e.g.,dihydroergocryptine ,dihydroergotamine ,ergotamine ,lisuride ,LSD ,mesulergine ,metergoline ,methysergide )Hypidone 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 ,ST-1936 ,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 Landipirdine Latrepirdine (dimebolin) Masupirdine Metitepine (methiothepin) MS-245 PRX-07034 PZKKN-94 Ritanserin Ro 04-6790 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 )
5-HT7
Antagonists: Atypical antipsychotics (e.g.,amisulpride ,aripiprazole ,asenapine ,brexpiprazole ,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 )JNJ-18038683 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
Tryptamines 4-Hydroxytryptamines esters /ethers 5-Hydroxy- and5-methoxytryptamines 2-Methyl-5-HT 4-HO-5-MeO-T 4-F-5-MeO-DMT 4,5-DHP-DMT 4,5-DHT 4,5-MDO-DMT 4,5-MDO-DiPT 5-BT 5-Ethoxy-DMT 5-HO-DET 5-HO-DiPT 5-HO-NiPT 5-HO-DPT 5-HTP (oxitriptan )5-MeO-2-TMT 5-MeO-34MPEMT 5-MeO-7,N ,N -TMT 5-MeO-DALT 5-MeO-DBT 5-MeO-DET 5-MeO-DiPT 5-MeO-DMT (N ,N ,O -TMS;O -methylbufotenine) 5-MeO-DPT 5-MeO-EiPT 5-MeO-EPT 5-MeO-MALT 5-MeO-MET 5-MeO-MiPT 5-MeO-NET 5-MeO-NiPT 5-MeO-NMT (O ,N -DMS) 5-MeO-PiPT 5-MeO-NBpBrT 5-MeO-T (5-MT; mexamine;O -methylserotonin) 5-MeO-T-NBOMe 5-MT-NB3OMe 5-NOT 5,6-DHT 5,6-MDO-DiPT 5,6-MDO-DMT 5,6-MDO-MiPT 5,6-MeO-MiPT 5,7-DHT Arachidonoyl serotonin ASR-3001 (5-MeO-iPALT) BAB Benanserin (BAS; SQ-4788) BGC20-761 Bufotenidine (5-HTQ;N ,N ,N -TMS) Bufotenin (5-HO-DMT;N ,N -DMS; mappine) Bufoviridine (5-SO-DMT) CP-132,484 Cqd 280 Cqd 285 Cqdd 280 Donitriptan EMDT (2-Et-5-MeO-DMT) HIOC Indorenate (TR-3369) Isamide (N -CA-5-MT) L-741604 MS-245 N -DEAOP-5-MeO-NETN -DEAOP-5-MeO-NMTN -Feruloylserotonin (moschamine)Norbufotenin (5-HO-NMT; NMS) O -Acetylbufotenine (5-AcO-DMT)O -Pivalylbufotenine (5-t -BuCO-DMT)Psilomethoxin (4-HO-5-MeO-DMT) Psilomethoxybin (4-PO-5-MeO-DMT) Serotonin (5-HT) N -Acetyltryptaminesα-Alkyltryptamines 5-Hydroxy- and 5-alkoxy-α-alkyltryptamines: 1-Pr-5-MeO-AMT 5-Allyloxy-AMT 5-Ethoxy-αMT 5-iPrO-αMT 5-MeO-αET 5-MeO-αMT (α,O -DMS; Alpha-O) α-Methyl-5-HTP α-Methylmelatonin α-Methylserotonin (5-HO-αMT; α-Me-5-HT) α,N ,O -TMS (5-MeO-α,N -DMT) α,N ,N ,O -TeMS (5-MeO-α,N ,N -TMT) AL-37350A (4,5-DHP-αMT) BW-723C86 Cyclized tryptamines 5-MeO-IsoqT Barettin Cyclic 3-OHM Ergolines andlysergamides (e.g.,LSD )Harmala alkaloidsβ-carbolines (e.g.,5-methoxyharmalan ,6-MeO-THH ,6-methoxyharmalan ,9-Me-BC ,β-carboline (norharman) ,fenharmane ,harmaline ,harmalol ,harmane ,harmine ,LY-266,097 ,pinoline ,tetrahydroharmine ,tryptoline )Iboga alkaloidsibogaine ,ibogamine ,noribogaine ,tabernanthine )Ibogalogs (e.g.,catharanthalog ,fluorogainalog ,ibogainalog ,ibogaminalog (DM-506) ,LS-22925 ,noribogainalog ,noribogaminalog ,PHA-57378 ,PNU-22394 ,tabernanthalog )Imidazolylindoles (e.g.,AGH-107 ,AGH-192 ,AH-494 )Metralindole Morpholinylethylindoles (e.g.,mor-T ,5-MeO-mor-T )Partial ergolines and lysergamides (e.g.,NDTDI ,RU-27849 ,RU-28251 ,RU-28306 ,FHATHBIN ,LY-178210 ,Bay R 1531 (LY-197206) ,LY-293284 ,10,11-seco-LSD ,10,11-secoergoline (α,N -Pip-T) ,CT-5252 )Pertines (e.g.,alpertine ,milipertine ,oxypertine ,solypertine )Piperidinylethylindoles (e.g.,pip-T ,5-MeO-pip-T ,indolylethylfentanyl )Pyrrolidinylethylindoles (e.g.,pyr-T ,4-HO-pyr-T ,5-MeO-pyr-T ,4-F-5-MeO-pyr-T )Pyrrolidinylmethylindoles (e.g.,MPMI ,4-HO-MPMI (lucigenol) ,5F-MPMI ,5-MeO-MPMI ,CP-122288 ,CP-135807 ,eletriptan )Tetrahydrocarbazolamines (e.g.,ciclindole ,flucindole ,frovatriptan ,LY-344864 ,ramatroban )Tetrahydropyridinylindoles (e.g.,RS134-49 ,RU-28253 ,NEtPhOH-THPI )Tetrahydropyrroloquinolines (e.g.,bufothionine ,O -methylnordehydrobufotenineYohimbans (e.g.,yohimbine ,rauwolscine ,spegatrine ,corynanthine ,ajmalicine ,reserpine ,deserpidine ,rescinnamine )Isotryptamines Related compounds 2-Azapsilocin 4-Aza-5-MeO-DPT 5-Aza-4-MeO-DiPT 5-HIAA 5-HIAL 5-HITCA 5-MIAL 7-Aza-5-MeO-DiPT α-Carboline γ-Carbolines (pyridoindoles) (e.g.,γ-carboline ,alosetron ,gevotroline ,latrepirdine ,lurosetron ,mebhydrolin ,tiflucarbine )Amedalin Benzindopyrine Benzofurans (e.g.,3-APB ,5-MeO-DiBF ,BPAP ,3-F-BPAP ,dimemebfe ,mebfap ,oxa-noribogaine )Benzothiophenes (e.g.,3-APBT )Carmoxirole CT-4436 Daledalin Gramine Histamine Homotryptamines (e.g.,HT ,DMHT )I-32 IAL IN-399 Indazolethylamines (e.g.,AL-34662 ,AL-38022A ,O -methyl-AL-34662VU6067416 ,YM-348 )Indenylethylamines (e.g.,C-DMT )Indolizinylethylamines (e.g.,TACT908 (2ZEDMA) ,1ZP2MA ,1Z2MAP1O )Indolylaminopropanes (e.g.,1-API ,2-API ,4-API ,5-API (5-IT; PAL-571) ,6-API (6-IT) ,7-API )Iprindole Masupirdine Medmain Molindone Non-tryptaminetriptans (e.g.,avitriptan ,LY-334370 ,naratriptan ) Ondansetron Oxazinopyridoindoles (e.g.,IHCH-8134 )Phenethylamines (e.g.,phenethylamine ,amphetamine )Piperidinylbenzimidazolines (e.g.,benperidol ,timiperone )Piperazinylbenzisothiazoles (e.g.,lurasidone ,perospirone ,tiospirone ,ziprasidone )Piperidinylbenzisoxazoles (e.g.,iloperidone ,milsaperidone ,ocaperidone ,paliperidone ,risperidone )Piperidinylindoles (e.g.,BRL-54443 ,LY-334370 ,naratriptan ,sertindole ,SN-22 )Pirlindole Pyridinylbenzimidazoles (e.g.,droperidol )Pyridinylindoles (e.g.,tepirindole )Pyridopyrroloquinoxalines (e.g.,IHCH-7113 ,IHCH-7079 ,IHCH-7086 ,lumateperone ,deulumateperone ,ITI-1549 )Pyrrolylethylamines (e.g.,2-pyrrolylethylamine (NEA) ,3-pyrrolylethylamine (3-NEA) ,3-pyrrolylpropylamine )Pyrrolopyridinylethylamines (e.g.,WAY-208466 )Quinolinylethylamines (e.g.,mefloquine )Ro60-0213 Selisistat Tetrahydropyridinylindoles (e.g.,EMD-386088 ,LY-367265 ,RU-24,969 )Tetrahydropyridinylpyrrolopyridines (e.g.,(R )-69 (3IQ) ,(R )-70 ,CP-94253 )Tetrindole Tipindole Zilpaterol (RU-42173)
