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meta-Tyramine

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*meta*-Tyramine
Names


Preferred IUPAC name 3-(2-Aminoethyl)phenol
Other names m-Tyramine; 3-Tyramine; 3-Hydroxyphenethylamine; 3-Hydroxyphenylethylamine; 3-OH-PEA
Identifiers
CAS Number	588-05-6^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:89626
ChemSpider	11008
ECHA InfoCard	100.197.155
PubChem CID	11492
UNII	K1OA38R0EZ^Y
CompTox Dashboard(EPA)	DTXSID50207522
InChI InChI=1S/C8H11NO/c9-5-4-7-2-1-3-8(10)6-7/h1-3,6,10H,4-5,9H2
SMILES Oc1cc(ccc1)CCN
Properties
Chemical formula	C₈H₁₁NO
Molar mass	137.182 g·mol⁻¹
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical compound

meta-Tyramine, also known asm-tyramine and3-tyramine, as well as3-hydroxyphenethylamine, is anendogenous trace amine neuromodulator and astructural analog ofphenethylamine.^[1]^[2]^[3] It is apositional isomer ofpara-tyramine, and similarly to it, has effects on theadrenergic anddopaminergic systems.^[4]^[5]

meta-Tyramine is produced in humans viaaromatic amino acid decarboxylase-mediated metabolism ofmeta-tyrosine.^[6] meta-Tyramine can be metabolized intodopamine via peripheral or brainCYP2D6 enzymes in humans.^[7]

References

[edit]

^Boulton AA, Huebert ND (November 1981). "Biosynthesis of some urinary trace amines in the rat and the human".Research Communications in Chemical Pathology and Pharmacology.34 (2):295–310.PMID 7335956.
^Dyck LE, Juorio AV, Boulton AA (June 1982). "The in vitro release of endogenous m-tyramine, p-tyramine and dopamine from rat striatum".Neurochemical Research.7 (6):705–16.doi:10.1007/bf00965523.PMID 7121718.S2CID 20758261.
^Sardar A, Juorio AV, Boulton AA (June 1987). "The concentration of p- and m-tyramine in the rat mesolimbic system: its regional distribution and effect of monoamine oxidase inhibition".Brain Research.412 (2):370–4.doi:10.1016/0006-8993(87)91145-0.PMID 3607473.S2CID 34094088.
^Dyck LE, Kazakoff CW, Dourish CT (October 1982). "The role of catecholamines, 5-hydroxytryptamine and m-tyramine in the behavioural effects of m-tyrosine in the rat".European Journal of Pharmacology.84 (3–4):139–49.doi:10.1016/0014-2999(82)90196-0.PMID 7173317.
^McQuade PS, Wood PL (1984). "The effects of administration of meta-tyramine and para-tyramine on dopamine and its metabolites in the rat striatum".Progress in Neuro-psychopharmacology & Biological Psychiatry.8 (4–6):705–9.doi:10.1016/0278-5846(84)90042-3.PMID 6531442.S2CID 24889205.
^EC 4.1.1.28 – Aromatic-L-amino-acid decarboxylase (Homo sapiens). Technische Universität Braunschweig. July 2016. Retrieved7 October 2016.Substrate: m-tyrosine

Product: m-tyramine + CO2

Organism: Homo sapiens{{cite encyclopedia}}:|website= ignored (help)
Reaction diagram
^Wang X, Li J, Dong G, Yue J (February 2014). "The endogenous substrates of brain CYP2D".Eur. J. Pharmacol.724:211–218.doi:10.1016/j.ejphar.2013.12.025.PMID 24374199.The highest level of brain CYP2D activity was found in the substantia nigra ... The in vitro and in vivo studies have shown the contribution of the alternative CYP2D-mediated dopamine synthesis to the concentration of this neurotransmitter although the classic biosynthetic route to dopamine from tyrosine is active. ... Tyramine levels are especially high in the basal ganglia and limbic system, which are thought to be related to individual behavior and emotion (Yu et al., 2003c). ... Rat CYP2D isoforms (2D2/2D4/2D18) are less efficient than human CYP2D6 for the generation of dopamine from p-tyramine. The K_m values of the CYP2D isoforms are as follows: CYP2D6 (87–121 μm) ≈ CYP2D2 ≈ CYP2D18 > CYP2D4 (256 μm) for m-tyramine and CYP2D4 (433 μm) > CYP2D2 ≈ CYP2D6 > CYP2D18 (688 μm) for p-tyramine

Neurotransmitters

Amino acid-derived

Major excitatory /
inhibitory systems

Glutamate system	Agmatine Aspartic acid (aspartate) Glutamic acid (glutamate) Glutathione Glycine GSNO GSSG Kynurenic acid NAA NAAG Proline Serine
GABA system	GABA GABOB GHB
Glycine system	α-Alanine β-Alanine Glycine Hypotaurine Proline Sarcosine Serine Taurine
GHB system	GHB T-HCA (GHC)

Biogenic amines

Monoamines	6-OHM Dopamine Epinephrine (adrenaline) NAS (normelatonin) Norepinephrine (noradrenaline) Serotonin (5-HT)
Trace amines	3-Iodothyronamine N-Methylphenethylamine N-Methyltryptamine m-Octopamine p-Octopamine Phenylethanolamine Phenethylamine Synephrine Tryptamine m-Tyramine p-Tyramine
Others	Histamine

Neuropeptides

Seehere instead.

Lipid-derived

Endocannabinoids

Neurosteroids

Seehere instead.

Nucleobase-derived

Nucleosides

Adenosine system	ADP AMP ATP

Vitamin-derived

Miscellaneous

Cholinergic system	Acetylcholine

Gasotransmitters	Carbon monoxide (CO) Hydrogen sulfide (H₂S) Nitric oxide (NO)

Candidates	Acetaldehyde Ammonia (NH₃) Carbonyl sulfide (COS) Nitrous oxide (N₂O) Sulfur dioxide (SO₂)

Trace amine-associated receptor modulators

TAAR1Tooltip Trace amine-associated receptor 1

EPPTB (RO-5212773)

TAAR5Tooltip Trace amine-associated receptor 5

Agonists	N,N-Dimethylethylamine Trimethylamine
Inverse agonists	3-Iodothyronamine

Notes: (1) TAAR1 activity of ligands varies significantly between species. Some agents that are TAAR1 ligands in some species are not in other species. This navbox includes all TAAR1 ligands regardless of species. (2) See the individual pages for references, as well as theList of trace amines,TAAR, andTAAR1 pages.
See also:Receptor/signaling modulators

Phenethylamines

Entactogens:Lophophine
MDPEA
MDMPEA

Amphetamines

Phentermines

Entactogens:MDPH
MDMPH

Others:Cericlamine

Cathinones

Phenylisobutylamines
(and further-extended)

Stimulants:α-Propylphenethylamine
Hexapradol
Phenylisobutylamine (α-ethylphenethylamine)

Catecholamines
(and close relatives)

Cyclized
phenethylamines

Phenylalkylpyrrolidines	α-PBP α-PHP α-PPP α-PVP MDPBP MDPPP MDPV 4-MePBP 4-MePHP 4-MePPP Fluorolintane MOPPP MOPVP MPBP MPHP MPPP Naphyrone PEP Prolintane Pyrovalerone
2-Benzylpiperidines (phenidates)	2-Benzylpiperidine 3-Bromomethylphenidate 3-Chloromethylphenidate 3-Methylmethylphenidate 3,4-Dichloro-2-benzylpiperidine 3,4-Dichloroethylphenidate 3,4-Dichloromethylphenidate 4-Bromoethylphenidate 4-Bromomethylphenidate 4-Chloromethylphenidate 4-Fluoroethylphenidate 4-Fluoroisopropylphenidate 4-Fluoromethylphenidate 4-Methyl-2-benzylpiperidine 4-Methylisopropylphenidate 4-Methylmethylphenidate 4-Nitromethylphenidate α-Acetyl-2-benzylpiperidine α-Keto-2-benzylpiperidine CPMBP Desoxypipradrol (2-DPMP) Difemetorex Ethylnaphthidate (HDEP-28) Ethylphenidate Isopropylnaphthidate Isopropylphenidate MDMPH Methylnaphthidate (HDMP-28) Methylphenidate Phacetoperane Pipradrol Propylphenidate Rimiterol Ritalinamide Ritalinic acid SCH-5472 Serdexmethylphenidate
Phenylmorpholines (phenmetrazines)	(2R,3R)-Hydroxybupropion 2-(2,5-Dimethoxy-4-bromophenyl)morpholine 2-Fluorophenmetrazine 2-Methylphenmetrazine 2-Phenylmorpholine 2-Phenyl-3,6-dimethylmorpholine 3-Chlorophenmetrazine (PAL-594) 3-Fluorophenetrazine 3-Fluorophenmetrazine (PAL-593) 3-Methoxyphenmetrazine 3-Methylphenmetrazine (PAL-773) 4-Fluorophenmetrazine (PAL-748) 4-Methylphendimetrazine 4-Methylphenmetrazine (PAL-747) 2C-B-morpholine Fenbutrazate Fenmetramide Flumexadol G-130 Isophenmetrazine Manifaxine Methylenedioxyphenmetrazine Morazone N-Ethylphenmetrazol Naphthylmetrazine (PAL-704) Naphthylmorpholine (PAL-678) Oxaflozane PDM-35 PF-219,061) Phendimetrazine Phenetrazine Phenmetetrazine Phenmetrazine Phenmetrazol Pseudophenmetrazine Radafaxine ((2S,3S)-hydroxybupropion)
Phenyloxazolamines (aminorexes)	3-Methylaminorex 4-Ethylaminorex (4-EAR) 4'-Fluoroaminorex 4-Methylaminorex (4-MAR) 4,4'-Dimethylaminorex (4,4'-DMAR) 2C-B-aminorex 2F-MAR 4B-MAR 4C-MAR 4F-MAR Aminorex Clominorex Cyclazodone Ephedroxane Fenozolone Fluminorex MDMAR Methylenedioxyaminorex (MDAR) N-Methylcyclazodone N,N-Dimethylaminorex Pemoline Thozalinone
Isoquinolines and tetrahydroisoquinolines	Anhalamine Anhalidine Anhalinine Anhalonidine Anhalonine Anhalotine Arizonine Calycotomine Carnegine (pectenine) Corypalline Debrisoquine Deglucopterocereine Deutetrabenazine Diclofensine DOB-CR DOM-CR Esproquin Gigantine Hedycarine Heliamine Hydrastinine Hydrocotarnine Hydrohydrastinine (MDMTHIQ; MDMA-CR) Isoanhalamine Isoanhalidine Isoanhalonidine Isocorypalline Isopellotine Isosalsoline Lemaireocereine Longimammamine Longimammatine Longimammidine Longimammosine Lophocerine Lophophorine Lophotine MDMA-CR Mescalotam N-Methylanhalinine N-Methylheliamine N-Methylisosalsoline N-Methyl-DOM-CR (Beatrice-CR) N-Methyl-THIQ (METH-CR) Nomifensine Norsalsolinol Nortehaunine Norweberine O-Methylanhalonidine O-Methylpellotine Pachycereine Pellotine Perafensine Peyoglutam Peyophorine Peyotine PMMA-CR Quinisocaine Reticuline Salsolidine Salsoline Salsolinol TDIQ (MDTHIQ, MDA-CR) Tehaunine TehaunineN-oxide Tepenine Tetrabenazine Tetrahydroisoquinoline (THIQ; AMPH-CR) Tetrahydropapaveroline Tilisolol Tretoquinol Uberine Valbenazine Weberidine Weberine Zelandopam
2-Aminoindanes	2-Aminoindane (2-AI) 5-IAI Aprindine BFAI BFMAI DHAI DOM-AI ETAI Indanorex Indantadol MDAI MDMAI MEAI (5-MeO-AI) MMAI NM-2-AI PNU-99,194 TAI
2-Aminotetralins	2-Aminotetralin (2-AT) 5-OH-DPAT 6-CAT 7-OH-DPAT 8-OH-DPAT AS-19 CHF-1024 DOM-AT MDAT MDMAT Nolomirole UH-232
Others / unsorted	1-Aminomethylindanes (e.g.,2CB-Ind,AMMI,bromojimscaline,jimscaline) 2-ADN 2-Benzhydrylpyrrolidine 2C-B-5-hemiFLY-α6 (BNAP) 2C-B-PYR 2CBecca 2CJP 2CLisaB 2CLisaH 3-Benzazepines (e.g.,fenoldopam,lorcaserin,7-chlorolorcaserin,SCHEMBL5334361) 3-Benzhydrylmorpholine 3-Phenylpiperidines (e.g.,3-phenylpiperidine,3-PPP,OSU-6162 (PNU-96391),LPH-5,LPH-48,Z3517967757 (Z7757)) 6-AB AL-1095 Aminochromes (e.g.,adrenochrome,adrenolutin) Benzocyclobutenes (e.g.,2CBCB-NBOMe,bromotomscaline,S33005,TCB-2,tomscaline) Benzoxepins (e.g.,BBOX,IBOX,TFMBOX) Butyltolylquinuclidine Camfetamine Cypenamine (trans-2-phenylcyclopentylamine) Diphenidine Diphenylprolinol DMBMPP Ergolines (e.g.,LSD) Fencamfamin GYKI-52895 HDMP-29 Ivabradine Methoxphenidine Methylmorphenate Milnacipran MT-45 2-Naphthylamine Org 6582 Partial ergolines (e.g.,NDTDI,RU-27849,DEIMDHPCA,DEMPDHPCA,DEMPDHPCA-2C-D,RU-27251) PF-592,379 Phenylcyclopropylamines (e.g.,DMCPA,TMT,tranylcypromine) Phenylpiracetams (e.g.,phenylpiracetam,MRZ-9547,RGPU-95) Pyridopyrroloquinoxalines (e.g.,lumateperone,deulumateperone,IHCH-7079,IHCH-7086,IHCH-7113,ITI-1549) Tetrahydrobenzopyranylamines (e.g.,CT-5126) Tolazoline Tricyclics (e.g.,AMDA,AMDH,benzoctamine,dizocilpine,SpAMDA) ZC-B

Related compounds

2-Furylethylamine
2-Pyrrolylethylamine
3-Pyrrolylethylamine
3-Pyrrolylpropylamine
2-Tetrahydrofurylethylamine
4-Benzylpiperidine
7-AB
Alkylamines (e.g.,1,3-DMBATooltip 1,3-dimethylbutylamine,1,4-DMAATooltip 1,4-dimethylamylamine,heptaminol,iproheptine,isometheptene,methylhexanamine/1,3-DMAA,octodrine,oenethyl,tuaminoheptane)
Benzylamines (e.g.,benzylamine,α-methylbenzylamine,MDM1EA,ALPHA,M-ALPHA,pargyline)
Benzylpiperazines (e.g.,benzylpiperazine,MDBZP,fipexide)
Cyclohexylaminopropanes (e.g.,propylhexedrine,norpropylhexedrine)
Cyclopentylaminopropanes (e.g.,isocyclamine,cyclopentamine)
Phenoxyethylamines (e.g.,3,4,5-trimethoxyphenoxyethylamine,CT-4719,ORG-37684)
Phenylalkenylamines (e.g.,phenylbutenamine)
Phenylalkynylamines (e.g.,phenylbutynamine)
Phenylpiperazines (e.g.,1-phenylpiperazine,mCPPTooltip meta-chlorophenylpiperazine,TFMPPTooltip trifluoromethylphenylpiperazine,oMPPTooltip ortho-methylphenylpiperazine,pFPPTooltip para-fluorophenylpiperazine,pMeOPPTooltip para-methoxyphenylpiperazine)
Phenylpropylamines (e.g.,phenylpropylamine,homo-MDA,homo-MDMA)
Thienylaminopropanes (thiopropamines) (e.g.,thiopropamine,methiopropamine,thiothinone)

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